It的用法
It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
1．(NMET98) It was only when I reread his poems recently ___ I began to appreciate their beauty．A．until B．that C．then D．so
正确答案：B 此题考查强调句，所以用that。
2．(NMET98) I hate____when people talk with their mouths full．
A．it B．that C．these D．them
正确答案：A 此题考查it作形式宾语的用法，所以选A。
3．(MET91，短文改错)David and I did not agree and David pointed to a path which he thought it would probably lead to a village．
正确答案：去掉it，因为定语从句中已有宾语which。
一、要点点拔
1．代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。
1) －Who is the baby?
－It‘s my teacher’s son．
2) －Who is that gentleman?
－It's my friend Tom．He(不可用It) wants to see you．
2．用于表达天气、环境、时间、距离、季节等。例如：
1) It’s half an hour’s walk from here to our school．
2) It‘s nice and warm here．
3) But it's two o'clock now, and it's time for us to go to school．
3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。
1).It 替代真正的主语——动词不定式短语.
It is easier to say than to do .
It is a good act to help the others.
2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中.
It’s no harm drinking running water in that area。
It’s foolish talking like that.
3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类：
①It is a pi ty (a shame ,a fact ,a wonder ,a good thing,etc. )that…
It is a shame that he didn’t pass the exam.
②It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that… 。
It was clear that they had no desire for peace.
③It seems (hap pened ,turned out,etc.)that…
It seemed that things were not as they expected.
④It is said ( decided ,expected ,etc)that …
It is said that the tickets have been sold out .
4.用作形式宾语。
当复合宾语中的宾语是不定式,－ing短语或从句往往用it作形式宾语,而将真正的宾语移至句末,句子重心后移。
1) We find it difficult to learn English well in such a short time．
2) We think it no use crying over spilt milk．
3) We made it clear when and where we were going to have the meeting．
5．用于强调句型，即“It is/was＋被强调部分＋that/who/whom+其它”句型之中。
使用该句型有以下几点请注意：
①强调句的谓语is或was永远用单数.
It was yesterday that I met your father in the street．
②不管被强调部分是哪种状语，只能用that连接，不得使用where、when等连词.
It was in the street that I met your father yesterday．
③被强调部分为人时，可用who(主格或宾格)和whom(宾格)代替that，用that也行。
1)It was your father that/whom /who I met in the street yesterday．
2) It was I that/who met your father in the street yesterday．
④强调句中也要注意主谓一致、人称一致和否定转移的问题。
1)It is they who are our friends．
2) It was not until ten o'clock that we got home last night．
⑤注意不要混淆强调句和其他从句。It is was…that…为强调句标志，去掉后仍可组成一个完整的句子，只是没被强调,而其他从句一般不具备这一特征。
比较：
1) It was ten o'clock when we got home last night．我们昨晚到家时已十点了。
2) It was at ten o'clock that we got home last night．我们昨晚是在十点到家的。
第一句不是强调句，when不可改为that,因为去掉it was和that后，只能组成“We got home ten o'clock last night．”这样一个不完整的句子；第二句是强调句，that不可改为when．
二、常用句型及考点
I. 形式主语型
1. It is clear (obvious，true，possible，certain…) that…
2. It is important (necessary，right，strange，natural…)that…
掌握本句型，应该记住所列举的形容词，并且记住that后的从句应用虚拟语气(should+动词原形)，should可以省去。
3. It is no good (use) doing sth．
4. It is a pity (a shame …) that…
本句型中，that后的从句一般用虚拟语气(should十动词原形)，should可以省去。表示出乎意料，常译为“竟然”。没有这种意义时，则不用虚拟语气。
5. It is time (about time，high time) that…
本句型中that后的从句应该用虚拟语气。
6. It is the first (second…)time that…
7. It is said (reported，learned…．)that…
8. It is suggested (ordered…) that…
本句型中的过去分词应该是表示请求、建议、命令等的词，that后的从句要用虚拟语气(should十动词原形)，should可以省略。常译为“据建议；有命令……”。
9. It happens (seems，appears) that…
10. It takes sb…to do sth．
11. It doesn’t matter whether…
12. It is kind (of sb) to do sth．
本句型中的不定式如果需要逻辑主语，则须要前置介词of，而句型中的形容词必须是能表示逻辑主语特征的形容词，常见的有bad，brave，careless，clever，cruel，foolish，honest，horrible，kind，lazy，modest，naughty, polite，rude，silly, stupid，wise，wrong等。
13. It is necessary ( for sb) to do sth．
14. It is (just) like sb to do sth．
本句型为“某人(恰恰)是……样子”。用来表示赞扬或不满，若用否定式，则表示怀疑。例：It's like him to leave the work to others．
他就是这样的一个人，把工作推给别人。
15. It is up to sb to do sth．
本句型表示“谊由某人做……”。
II．强调句型
It is+ 被强调部分+that/who…
本句型中被强调部分可以是主语、宾语或状语。强调的主语如果是人，that可以由who 换用。
III．其他句型
1. It is…since…
本句型主句中用时间作表语，一般用现在时或完成时，since引导的从句常用瞬间动词的一般过去时态。主句如用一般过去时，则从句用过去完成时。
2. It is…when…
本句型中的when引导的是一个时间状语从句，主句中的it指时间，表语由具体的时间充当。
3. It looks (seems) as if．．．
本句型中的as if引导一个状语从句，常译为“看起来好像……”。如果与事实不相符合，则用虚拟语气．
例1 It looks as if he is ill (真的病了) .
例2 It looks as if he were ill (没有生病) .
Exercises:
一．单项选择
1.It was at the gate ____ he told me the news.
A. that
B. what
C. which
D. when
2.Is ____necessary to tell his father everything
A. it
B. that
C. what
D. he
3.Was it in this palace ____ the last emperor died?
A. that
B. in which
C. in where
D. which
4.Is ____ possible to fly to the moon in a spaceship?
A. now
B. man
C. that
D. it
5.Was it during the Second World War ____he died?
A. that
B. while
C. in which
D. then
6.Is ____necessary to complete the design before National Day?
A. this
B. that
C. it
D. he
7.I don't think ____possible to master a foreign language without much memory work.
A. this
B. that
C. its
D. it
8.Does ____matter if he can't finish the job on time?
A. this
B. that
C. he
D. it
9.It was not ____she took off her dark glasses ____ ,I realized she was a famous film star.
A. when; that
B. until; that
C. until; when
D. when; then
10.Tom‘s mother kept telling him that he should work harder, but ____didn’t help.
A. he
B. which
C. she
D. it
11.____is a fact that English is being accepted as an international language.
A. There
B. This
C. That
D. It
12. Is ________ possible to fly to the moon in a spaceship?
A．now B．man C．that D．it
13．Our food and service are better than ________ used to be.
A．it B．we C．they D．them
14．________ appears to me ________ the report must be truth.
A．That; it B．It; that C．It; it D．That; that
15．He feels ________ duty to help others.
A．that he B．that his C．it he D．it his
16．Take ________ easy. The roads are icy.
A．it B．them C．us D．you
17．The TV sets made in China are much better than ________ in Japan.
A．that B．those C．them D．It
18．—— Have you found the bike you lost yesterday?
——Yes, I've found ________ already.
A．it B．that C．the one D．that one
19.——I'm looking for a flat.
——Would you like ____ with ____ garden?
A．it; the B．it; a C．one; a D．one; the
20．________ was ________ who I met in the museum this morning.
A．It; him B．It; he C．That; he D. That; him
21．It was in the rice fields ________ we had our League meeting.
A．where B．that C．in which D．on which
22．________ you come to the party so late?
A．Why is it B．Why it is
C．Why it is that D．Why is it that
23．—— Were all three people in the car injured in the accident
—— No, ___ only the two passengers ___ got hurt．
A．they were; that B．there was; that
C．it was; who D．there are; who
24．I don' t think ________ possible to master a foreign language without much memory work .
A．this B．that C．its D．it
25．It was not ________ she took off her glasses ________ I realized she was a famous film star．
A. when; that
B. until; that
C. until; when
D. when; then
26.It was not until 1920 ____ regular radio broadcasts began.
A．while B．which C．that D．since
27．________ is a fact that English is being accepted as an international language. A．There B．This C．That D．It
28．It was about 600 years ago ________ the first clock with a face and an hour hand was made.
A．that B．until C．before D．when
29．It was only when I reread his poems recently ____ I began to appreciate their beauty. A．until B．that C．then D．So
30．I hate ______ when people talk with their mouths full.
A．it B．that C．these D．them
31．—— Why don't we take a little break? ——Didn't we just have ________ ?
A．it B．that C．one D．this
32.Was it during the Second World War ____ he died？(MET88)
A．that B．While C．in which D．Then
33.Is ____ possible to fly to the moon in a spaceship？(MET88)
A．now B．that C．it D．Man
34.I don't think ___ possible to master a foreign language without much momory work．(MET90)
A．This B．that C．its D．It
35.___ is a fact that English is being accepted as an international language．(NMET95) A．There B．This C．That D．It
36.It was about 600 years ago ___ the first clock with face and an hour hand was made．(NMET97)
A．that B．until C．before D．when
37.____computers play such an important part in our daily life?
A．Why it is that B．Why is it that
C．Why was it that D．Why is it
38. Was it during the Second World War _____he died?
A. that
B. while
C. in which
D.then
39. Is ____ necessary to take off our shoes when we enter the lab?
A. everyone
B.this
C.her
D.it
40. Is ____ possible to fly to the moon in a spaceship?
A.now
B.that
C.it
D.man
41. I don’t think ___ possible to master a foreign language without much memory work.
A.this
B.that
C.its
D.it
42. She heard of a terrible noise, ___ brought her heart into her mouth.
A.it
B.which
C.this
D.that
43. Alice received an invitation from her boss, ____ came as a surprise.
A.it
B.that
C.which
D.he
44. Does ____ matter if he can’t finish the job on time?
A.this
B.that
C.he
D.it
45.Tom’s mother kept telling him that he should work harder, but ____ didn’t help.
A.he
B.which
C.she
D.it
46.The weather turned out to be very good, ___ was more than we could expect.
A.what
B.which
C.that
D.it
47.____is a fact that English is being accepted as an international language.
A.There
B.This
C.That
D.It
48.I hope there are enough glasses for each guest to have _____.
A.it
B.those
C.them
D.one
49.It was about 600 years ago___the first clock with a face and an hour hand was made.
A.that
B.until
C.before
D.when
50.I hate ____ when people talk with their mouths full.
A.it
B.that
C.these
D.them
51.It was only when I reread his poems recently____ I began to appreciate their beauty.
A.until
B.that
C.then
D.so
52.It is the ability to do the job ____ matters not where you come from or what you are.
A.one
B.that
C.what
D.it
53.It ____ you that ____ to blame.
A.is;is
B.is; are
C.are;are
D.are;is
54.Was_____that I saw last night at the concert?
A.it you
B.not you
C.you
D.that you
55.____ electricity plays such an important part in our life?
A.Why is it that
B.Why is it
C.Why it is that
D.Why is that
56.It was ____ he said _____ disappointed me.
A.what;what
B.that;that
C.what;that
D.that;what
57.It was in the lab ___ was taken charge of by Professor Harris ___ they did the experiment.
A.which; that
B.that; what
C.whom; that
D.which; where
58.Many people now make a rule to buy cards for their friends before Christmas.
A.themselves
B.it
C.that
D.this
59.Someone is at the door, who is ?
A.this
B.that
C.it
D.he
60.—It is raining cats and dogs.
—.
A.So it is
B.So is it
C.Neither it is
D.Neither is it
二.分析it成分，辨清相似句型。
1.①_____ is well know to us all that the earth is round.
②____ is well known to us all, the earth is round.
A.That
B.As
C.It
D.Which
2. ①_____doesn’t matter much whether he’ll come to the party.
②I feel ____ an honour to be invited to speak here.
A.this
B.it
C.that
D.what
3. ①___ no wonder that he has passed the exam.
②___ no need for you to wait here.
A.There being
B.It was
C.It is
D.There is
4. ①Was it the house ____ Abraham Lincoln was born?
②Was it in the house ____ Abraham Lincoln was born?
A.that
B.where
C.which
D.both A and B
5. ①It’s very kind ____ you to help us.
②It’s very important _____ you to keep the balance of nature.
A.for
B.of
C.to Dwith .
6. ①It is no good ____ such a thing.
②It’s of no importance _____ such a thing.
A.do
B.to do
C.doing
D.done
7.①It's time that we ____ to school.
②It is the second time that we _____ to Beijing.
A.go
B.went
C.have been
D.have gone
8.①It's tomorrow ____ he is going to Beijing.
②It was 8 o'clock _____ he went to school.
A.that
B.when
C.before
D.since
9.①It is 3 years ____ he joined the army.
②It will be 3 years ____ we meet again.
A.before
B.after
C.since
D.when
答案：
一．单项选择
1-30 ABADA CDDBD DDCBD ABACA BDADB CDABA
31-60 CACDD AB ADC DBCDD BDDAA BBBAA CABCA
二.分析it成分，辨清相似句型。
21.CB 22.BB 23.CD 24.BA 25.BA 26.CB 27.BC 28.AB 29.CA
高中英语语法必背100句 时态语态 1. It has been raining in the past three weeks.完成时间状语 过去三周一直在下雨。 2. He was writing a book last year. but I don't know whether he has finished it. 过去进行时现在完成时 他去年在写一本书，我不知道他完成了没。 3. The plane is arriving in 5 minutes. 进行时态表将来 飞机将十5分钟之后到达。 4. I had meant to come here，but I was too busy then. 过去完成时 我本来打算来这儿的，但是当时太忙了。 5. If he comes today, I won't go. If引导条件状从，遵循”主将从现"原则今天如果他会来，我将不走。 6. He studied in Shanghai for 3 years. and then he has lived in Beijing till now/since then/ever since. 一般过去时，完成时 他在上海读了三年书。然后就一直住在北。 7. I will have written 200 poems by the end of next term. 将来完成时到下学期末为止，我将写完200首诗。 8. He is afraid of being laughed at.被动中的介词不省略 他害怕人嘲笑。 9. The workers get paid by the month. get+done表被动 这些工人按月发工资。 10. His theory proved (to be) true. 系动词省略 他的理论被证实是对的。 11. This book sells well and is worth reading. Besides, it is easy to understand.主动表被动
高中英语语法：It的完整用法精讲 it可用作人称代词、指示代词、先行词及引导词等。 1. 人称代词it，是第三人称单数中性，代表前文已提到过的一件事物。如： 1）That vase is valuable. It's more than 200 years old. 那个花瓶很珍贵，它有200多年的历史。 2）I love swimming. It keeps me fit. 我喜欢游泳，它能使我保持健康。 当说话者不清楚或无必要知道说话对象的性别时，也可用it来表示。如： 3）It's a lovely baby. Is it a boy or a girl? 宝宝真可爱，是男孩还是女孩？ it可用来指代团体。如： 4）The committee has met and it has rejected the proposal. 委员会已开过会，拒绝了这项建议。 it用以代替指示代词this, that.如： 5）--- What's this? --- It's a pen. —这是什么？—是一支钢笔。 6）--- Whose book is that? --- It's Mike's. —那是谁的书？—是迈克的。 2. 指示代词it，常用以指人。如： 7）Go and see who it is. 去看看是谁。 8）--- Who is making such a noise? —是谁发出这样的吵闹声？ --- It must be the children. —一定是孩子们。 3.虚义it无指代性，常用作没有具体意义的主语，出现于表示天气、气候、温度、时间、地点、距离等意义的句子中。如： 9）It is half past three now. 现在是三点半钟。 10）It is six miles to the nearest hospital from here. 这里离最近的医院也有六英里。 11）It was very cold; it snowed and grew dark. 天气很冷；天下着雪，渐渐地变黑了。 it也常用来表示一般的笼统的情况。如： 12）It's awful—I've got so much work I don't know where to start. 糟透了——我有这么多工作要做我不知从何开始。 13）How is it going with you? 你近况如何？ 14）Take it easy. 不要紧张。 it也常用于下列结构： 15）It looks as if the college is very small. 看起来这个学院很小。 16）It seems as though our plan will be perfect. 似乎我们的计划很完善。 17）It's my turn. 该轮到我了。 it也常用于某些习惯用语中作宾语，各该习惯用语有具体意义，但it并无具体意义。如：cab it 乘车catch it 受责，受罚come it 尽自己分内come it strong 做得过分walk it 步行make it 办成take it out of somebody 拿某人出气 4. 先行词it. it充当形式主语或形式宾语，本身无意义，只起一种先行引导的作用，先行词不重读。后面的真正主语或真正宾语通常是不定式结构、-ing分词结构或名词性从句。 （1）用作形式主语
高中英语语法讲义——名词 名词的数 单数名词变复数名词的常用法则 （1）一般情况直接加-s, 如：books, trees. （2）以-s, -x, -ch, -sh结尾的加-es, 如：glasses, boxes, watches, brushes. （3）以辅音字母加-y结尾的名词把-y改为-i再加-es. 如：stories, countries. （4）以-o结尾的常在词尾加-s，但中学英语中下列名词要加-es, 它们是：黑人英雄 ．．中吃土豆 ．．、西． ．．．．在回声 红柿 ．．，即Negroes, heroes, echoes, potatoes, tomatoes. 下列以-o结尾的名词既可加-es, 也可加-s,它们是：zeros (zeroes)零, mosquitos (mosquitoes)蚊子, volcanos (volcanoes) 火山。 （5）以-f或-fe结尾的名词变为复数时一般直接加-s，但下列名词需把f或fe去掉，加-ves，它们是：为 了自己 ．．和一片树叶 ．．上，把狼．劈成了两半．，即：selves, lives, ．．．．站在架子 ．．手里拿着刀子 ．．和他的妻子 ．．活命．，小偷 thieves, wives, knives, loaves, leaves, shelves, wolves, halves. 但下列以-f结尾的名词既可变f为v后加-es，也可直接在f后加-s，它们是：handkerchiefs (handkerchieves)手帕，scarfs (scarves)围巾。 （6）合成名词变复数时，通常只将里面所含的主体名词变为复数，如果没有主体名词，则将最后一部分变为复数。如sons-in-law女婿；passers-by过路人；storytellers讲故事的人；housewives家庭主妇。（7）“man/ woman+ n.”变复数时，作定语的man/ woman和中心词都要变复数。 men teachers男老师women engineers女工程师 （8）不规则复数形式 ①变内部元音 foot-feet man-men woman-women tooth-teeth mouse-mice goose-geese gentleman-gentlemen ②单复数同形的名词 sheep deer spacecraft太空船 aircraft飞行器Chinese Japanese
?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。
3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)
Section_ⅢGrammar—it的用法(1) 语法图解 探究发现 ①It is a beautiful day here and I am sitting under the big tree at the end of the garden. ②Your mother tells me that you started smoking some time ago and now you are finding it difficult to give it up. ③It is never too late to mend. ④It is no use talking to them. ⑤It is said that he stole the money. ⑥I think it difficult to learn English well. ⑦We make it clear that speaking to the teacher in that way is not polite. ⑧I don't like it when people talk with the mouth full of food. [我的发现] (1)①句it表示天气，②句第一个it代替to_give_it_up作形式宾语；第二个it代替句中所说的“吸烟”的事。 (2)在句③④⑤中it用作形式主语，其中句③用在“It is＋形容词＋(for/of＋sb.)＋动词不定式(短语)”中，it指代动词不定式(短语)；句④用在“It is＋no use/good＋动名词(短语)”中，it指代动名词(短语)；句⑤用在“It is＋said/believed/reported＋that从句”中，it指代that 从句。 (3)在句⑥⑦⑧中it用作形式宾语，其中句⑥用在“动词＋it＋形容词＋动词不定式(短语)”中，it指代动词不定式(短语)，句⑦用在“动词＋it＋形容词＋that从句”中，指代that 从句；句⑧it用在某些特殊的句式中，指代when从句。 一、it用作人称代词和非人称代词 1．用作人称代词 (1)it用来指代前面的名词或前面提到过的事。 My friend offered me a beautiful gift yesterday, and I like it very much. 我朋友昨天给了我一件漂亮的礼物，我非常喜欢。
2021届高中英语新高考语法基础版一轮复习讲义（9） 被动语态知识点整理总结 被动语态是中高考经常考的语法之一，也是日常口语和写作中必不可少的句子形式，今天笔者就带大家一起来学习它。 01 被动语态的概念 所谓被动语态是相当于主动语态而言的。如果主语是动作的执行者，那么我们就称其为主动语态，反之，如果主语是动作的承受者或动作的对象，那我们就称其为被动语态。如： 主: Many people speak Chinese. 被: Chinese is spoken by many people. 02 被动语态的结构 被动语态由"be＋及物动词的过去分词"构成。人称、数和时态的变化是通过be的变化表现出来。下面通过speak来说明常见时态的被动语态：一般现在时 am/is/are＋spoken 一般过去时 was/were＋spoken
一般将来时 will/shall be＋spoken 现在进行时 am/is/are being＋spoken 过去进行时 was/were being＋spoken 现在完成时 have/has been＋spoken 过去完成时 had been + spoken 03 被动语态的执行者 被动语态的执行者一般以by+人/物来引出。如果没有执行者或没必要说出执行者，则可以省略这部分。如： Some computers were stolen last night. 无法确定执行者，因此无by结构。 The glass was broken by Mike.
执行者是Mike，所以这里用by引出。 04 含有情态动词的被动语态 用“情态动词＋be＋过去分词”结构。 如： We can repair this watch in two days. This watch can be repaired in two days. 05 特殊情况主动变被动 make/let+sb+do变为被动要还原to。如： He made the boy work for two hours a day. The boy was made to work for two hours a day. 双宾语结构的物做被动语态主语时，后面要还原出介词。如：Jack gave Peter a present just now. A present was given to Peter just now. 巩固练习 1. The flowers were so lovely that they ______ in no time. A. sold B. had been sold
高考英语语法知识之It 的用法总结 1．It is + 被强调部分+ that ... 该句型是强调句型。将被强调的部分放在前面，其它部分置于that之后。被强调部分可以是主语，宾语，状语。强调的主语如果是人，that可以由who换用。 如果把这种句型结构划掉后，应该是一个完整无缺的句子。这也是判断强调句型与其它从句的方法。 It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father. 2．It was not until + 被强调部分+ that ... 该句型也是强调句型。主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是not ... until ... 的强调形式。 It was not until she took off her dark glasses that I realized she was a famous film star. = Not until she took off her dark glasses did I realize she was a famous film star. = I didn’t realize she was a famous film star until she took off her dark glasses. 3．It is clear ( obvious, true, possible,certain....) that ..... 该句型中it 是形式主语，真正的主语是that 引导的主语从句，常译为＂清楚（显然，真的，肯定．．．）＂是主语从句最常见的一种结构。 It is very clear that he’s round and tall like a tree.= That he’s round and tall like a tree is very clear. 4. It is important ( necessary, right, strange, natural...) that ... 由于主句中的形容词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去。 It is important that we (should) learn English well. It is necessary that he (should) remember these words. 5. It is said (reported, learned....) that ... 该句型中的it 仍是形式主语，真正主语是that 引导的主语从句。该结构常译为＂据说（据报道，据悉．．．）＂。It is said that he has come to Beijing. 6. It is suggested ( ordered ... ) that ... 主句中的过去分词是表示请求，建议，命令等词时，that后的从句要用虚拟语气（should + 动词原形），should 可以省。常译为＂据建议；有命令．． It is suggested that the meeting ( should ) be put off. It was ordered that we ( should ) arrive there in two hours. 7. It is a pity ( a shame ... ) that ... 该句型中，that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。 It is a pity that such a thing ( should ) happen in your class. It is a pity that he is ill. 8. It is time ( about time ,high time ) that ... 该句型中that 后的从句应该用虚拟语气，值得注意的是①常用过去时态表示虚拟．②有时也用should + 动词原形，should 不能省。常译为＂是（正是）．．．的时侯．．．＂。 It is time that children should go to bed. = It is time that children went to bed. 9. It is the first ( second ... ) time that ... 该句型中的that 从句不用虚拟语气，而用完成时态。至于用什么完成时态，由主句的谓语动词的时态决定。如果是一般现在时，后面从句用现在完成时态；如果是一般过去时，后面从句则用过去完成时态。该结构中that 可以省去；it有时用this / that 替换．常译为＂这是某人第几次做某事了＂。 It is the first time I have been here. = This is the first time I have been here. 10 It is the +形容词最高级+ 名词+ that + ….. 该句型中的that 从句不用虚拟语气，而用完成时态。至于用什么完成时态，由主句的谓语动词的时态决定。如果是一般现在时，后面从句用现在完成时态；如果是一般过去时，后面从句则用过去完成时态。该结构中that 可以省去；it有时用this / that 替换．常译为＂这是某人做过的最…的事情＂。 This is the best film that I have ever seen . That was the worst song that he had heard . 11. It is .... since ...
语法总结全集 名词和主谓一致 一、名词的分类 英语中名词主要可以分为可数名词和不可数名词。 1．可数名词 可数名词一般都有单复数。单数时，名词前可加不定冠词a/an；复数时，前面可加数词，名词本身要改成复数形式。 可数名词的复数有规则和不规则两种变化。规则的名词，只要在单数名词之后加“s”，“es”或去“y”加“ies”就行，如：an umbrella, twelve umbrellas；a factory, three factories。不规则的名词变化则要靠积累记忆，如：a mouse, ten mice；a policeman, six policemen。 有少数可数名词，如sheep，works（工厂），Chinese等，它们的单复数同形：a sheep, four sheep；a chemical works, five chemical works。 此外，还有一些可数名词只有复数形式，如clothes，trousers，cattle，police，people(人，人民)等。 英语名词中还有一些合成词，它们的复数形式有三种可能：1）后面的部分变成复数形式：grown-ups，boy students，grandchildren。2）前面的部分变成复数形式：passers-by，lookers-on，sons-in-law。3）前、后都变成复数形式：men doctors，women drivers。 2．不可数名词 不可数名词没有单复数的变化，前面也不能加a/an，或数词。但是我们可以用量词来表示不可数名词的数量，单复数表现在量词上，如：a piece of paper；two pieces of paper。 在有些情况下，不可数名词也可用a/an，表“一种”、“某种”的意思，如have a wonderful time，receive a good education，be made into a fine paper。 有时为了表示量大，不可数名词的后面也可加“s”，如sands，ashes，waters等。 但是我们在学习不可数名词的时候，特别要记住英语中有一些名词，它们无论在什么情况下，前面都不能用a/an，后面也不可加“s”，如weather，information，等。 3．有的名词既可是可数名词，也可是不可数名词 英语中有相当一部分的名词，既可以是可数，也可以是不可数，它们的意义有时略有不同，有时则完全不同。如：difficulty, success, time, work，paper，glass，等。 4．用于表示可数与不可数名词的数量“多”“少”的常用词和词组 跟可数名词连用的如：few, a few, many。 跟不可数名词连用的如：little, a little, much。 可数与不可数都能用的是：a lot of , plenty of。 二、主谓一致 1．通常被看作单数的主语部分 1）不定式、动名词和主语从句。 eg.. To see is to believe. Seeing is believing. What he said was different from what he did. 2）表示“时间”“距离”“金钱数量”的名词。 eg. Twenty years is quite a long time. 10 kilometers doesn’t seem to be a long distance to Mira. 300 dollars is too much for this old coin.
高中英语语法讲义————特殊句式 倒装句 通常句式为自然语序“主语+谓语”，有时为了强调句子的某一部分，或者出于词汇用法、语法结构或修辞上的需要，将这种比较固定的语序加以颠倒，就形成了倒装。分为完全倒装，部分倒装和形式倒装。 一.完全倒装：谓语动词完全置于主语之前，主语为名词不为代词，谓语不用进行时。 1.一些表示地点、时间或方位等的副词或介词短语。如：here, there, now, then, up, down ,in, out, away, off, in the room, on the wall等置于句首。 Down came the rain and up went the umbrella. Then followed three days of heavy rain. Out rushed the children laughing loudly. Away flew the plane. 2.such 位于句首。 Such was Albert Einstein, a simple man and the 20th century’s greatest sci entist. 注：此句型中的such多被认为是表语，所以such后的be动词应与其后真正的主语保持一致。 Such are the facts; no one can deny them. 二．部分倒装：只把谓语的一部分（助动词，情态动词或be动词）置于主语之前 1.so+ be 动词/ 助动词/ 情态动词+主语，意为“...也是如此”。 They love making lots of friends; so do I. 2.neither/nor+ be动词/助动词/情态动词+主语，意为“...也不这样”。 Lily can’t ride a bicycle; neither/nor can Lucy. 3.否定词never, seldom, nor, not, little, hardly, scarcely等或表示否定意义的介词短语at no time, under/in no circumstances, in no case, by no means, on no condition 等置于句首时。 Not a single mistake did he make. =He di dn’t make a single mistake. 4.only 修饰副词、介词短语或状语从句，且放在句首时。 Only then did I begin to understand him. Only in this way can we solve the problem. Only if you work hard will you be admitted to a top university. 5.so...that...和such...that...句式中，so或such及其所修饰的部分置于句首时，主句用部分倒装。 So clearly does he speak English that he can always make himself understood Such progress did he make that he won much respect. 三．形式倒装：在语法上称为前置。只把强调的内容提至句首，主谓并不倒装。 1.感叹句 What an interesting talk they had! =How interesting a talk they had! 2.the+比较级.....,the +比较级.....句型 The more you listen to English, the easier it becomes. 3.whatever+ n.或however+ adj./adv.引导的让步状语从句 Whatever reasons you have, you should carry out your promise. However difficult the problem may be, we must work it out this evening. 4,as / though引导让步状从，表语、状语、含情态动词的谓语提前，表语为单数名词提前不用冠词。 Young as /though he was, he was successful. Child as /though he is, he knows much.
语法专题十：it的用法 1.指代事物、动物、婴儿或未知的人。 2.指天气、时间、距离、自然现象、环境等。 3.代替不定式，作形式主语或形式宾语(常与feel, consider, find, believe, make, take, imagine, think, suppose, regard等连用)。 4.代替动名词，作形式主语或形式宾语： It is no good / no use / useless / dangerous + doing I think it no good / no use / useless / dangerous + doing I think it no use complaining about their prejudice. 5.代替主语从句、宾语从句，作形式主语或形式宾语： It seems / appears / happens / turns out / proves + that… It is certain / likely / possible / probable + that… We have made it clear that she has nothing to do with the case. 6.用于强调句：It is / was … that / who… A student witnessed the car accident at the turning last night. (1 ) ( 2 ) ( 3 ) ( 4 ) (1) _________________________________________________________. (2) _________________________________________________________. (3) _________________________________________________________. (4) _________________________________________________________. It is not until +被强调的部分+ that… I didn’t realize she was a famous film star until she took off her dark glasses. ________________________________________________________________. 7. 其他重要句型： It is important (necessary, right, strange, natural) that…（should+动词原形） It is said (reported, learned…) that… It is suggested (ordered…) that…（should）+动词原形 It is a pity (a sham) that …（should）+动词原形 It happens (seems, looks, appears ) that... It occurs to sb. to do / that…：使某人想起…… It is/ has been +一段时间+ since ...+过去时 It will be +一段时间+ before ... It looks ( seems ) as if … It is no wonder…：难怪 When it comes to…：当谈到…… It comes about that…：发生 8. appreciate, love, like, hate, see to(负责，注意) + it + 从句 巩固练习： 1. It took us over an hour ______ along the street. A. walk B. to walk C. walking D. walked 2. I think it a great honour ______to visit your country. A. to invite B. inviting C. having invited D. to be invited 3. Many people now make ______a rule to buy cards for their friends before Christmas. A. themselves B. it C. that D. this 4.______is very clear to everyone that he's round and tall like a tree.
第二章“It”用法及其句型和固定搭配讲解 "It" 用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，因此应给予充分的重视，现将it用法归纳如下： 一、It用作实词 表达以下概念:指代前文提到的事物，前文中的this, that;替代前文中的内容;指代一位性别不明的小孩或未知的人;指代未指明但谈话双方都知道的那件事;指代时间、天气、气候、距离等自然现象…… 二、It用作形式主语 替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。 It 作形式主语的常见句型： 1. 代作主语的动词不定式，其句型为 (1) It be adj. (for sb.) to do sth. 此处adj. 通常为描述事件的形容词：easy, difficult, hard, necessary, unnecessary, possible, impossible, likely, unlikely, right, wrong, important, unimportant, legal, illegal, well-mannered, ill-mannered, polite, impolite, clear, obvious, certain, suitable, proper, fit, useful, useless, dangerous… 例 It is illegal (for a teenager) to drive a car without a license. (2) It be adj. of sb. to do sth. 此处adj. 通常为描述人的形容词：kind, unkind, nice, rude, cruel, considerate, thoughtful, thoughtless, careful, careless, silly, foolish, stupid, clever, wise, crazy. 例 It's kind of you to help me with the problem. (3) It替代作主语的动名词的常见句型 It's no good/use doing… It's (well)worth doing… I t's (well)worth one's while doing/to do… It's (well)worth while doing/ to do
it的用法 一、考点聚焦 1、it的基本用法 （1）用作人称代词，代替前文提到过的事物。 The train has arrived. It arrived half an hour ago. （2）用以代替提示代词this, that。[来源:学,科,网Z,X,X,K] —What’s this? —It’s a knife. —Whose watch is t hat? —It’s mine. （3）起指示代词的作用，指一个人或事物。 —Who is knocking at the door? —It’s me. （4）指环境情况等。 It was very noisy(quiet) at the very moment. （5）指时间、季节等。 —What time is it? —It’s eight o’clock. It often rains in summer here. （6）指距离。 It is a long way to the school. （7）作形式主语。 It is not easy to finish the work in two days. It is no use crying over spilt milk. It is as pity that you didn’t read the book. （8）作形式宾语。 I think it no use arguing w ith him. I found it very interesting to study English. He made it clear that he was not interested in that subject. （9）用于强调结构。 It was Xiaoming whom(that)I met in the street last night. It was in the street that I met Xiaoming last n ight. It ws last night that I met Xiaoming in the street. It was I who met Xiaoming in the street last night. 2、含有“It is …”的句型 （1）It is time (for sb.) to do sth. It is (high) time that sb. did sth.(虚拟语气) （2）It is + 形容词（+of / for sb.）+ to do sth 通常用 of的词有brave、clever、careful、hopeless、kind、good、naughty、nice、silly、stupid、foolish、wise 等。 （3）It is + 形容词+ that + sb. + (should) do sth.（虚拟语气）[来源:学科网ZXXK] 能用于这个句型的形容词有strange、wonderful、natural、good、proper、right、wrong、well、fortunate、important、necessary、useless、likely、probab le、impossible等。有时可省去should而直接用动词原形。如：It is important that we should pay close attention to grain. It is natural that he（should）say so. （4）It is no use/ good + doing sth. It is no use trying again = It is of no use to try again. （5）It is + 被强调部分+ that/who + …[来源:学科网ZXXK][来源:Z+xx+https://www.doczj.com/doc/f61047552.html,] Was it in the street that you met her? Who was it that called him“comrade”? It was not until yesterday that I met my old friend.
Grammar —Adverbial Clause 状语从句 定义：用“引导词 +陈述语序”作状语 状语：修饰动作，把句子“壮大” He speaks English well .（方式状语） The sun rises i n the east and sets in the west .（地点状语）九种状语从句：时间、地点、原因、结果、方式、目的、条件、让步、比较Ilove you you love me (1)when —时间状语 (2)where —地点状语 (3)because —原因状语 (4)so —结果状语 (5)as —方式状语 (6)inorderthat —目的状语 (7) I will love you if you love me. —条件状语 (8) I won ’ t love you even if you love me. —让步状语 (9)more than —比较状语 意思不同，形式不同，形意相关 I read English loudlyin the open airevery morning.
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Grammar —Adverbial Clause 方式状语地点状语时间状语 用从句形式当状语，即状语从句 (一)时间状语从句引导词 till, until A until B ： A 一直延续到 B 出现或发生就停止 I sleptuntilnoon. I didn ’ t go to bed until midnight. I entered the room until 6:30. I didn ’ t enter the room until 6:30. as soon as, the minute, the moment, the instant, immediately, directly no sooner ? than, hardly ? when, scarcely ? when(结合倒装句 ) before, after, 完成 +since( 自从 )+过去时间 --what was the party like? --Wonderful. It ’ s yearsI enjoyed myself so much. A. after B. before C. when D. since