unless 和until 用法区别
A good storyteller must be able to hold his listeners' curiosity ________ he reaches the end of the story.
A. when
B. unless
C. after
D. until
析:答案是D。不少同学可能会误选unless,引导条件状语从句,但析语境可知,该空表"直到",强调时间的延续,应用until引导时间状语从句。
本题着重考查unless和until的用法区别,其用法区别是高考热点考点。本文拟谈一谈unless和until的用法区别。
一、作为从属连词含义不同,引导从句性质不同
unless与until均为从属连词,unless表"除非",强调条件,引导条件状语从句;until表"直到",强调时间的延续,引导时间状语从句。
1. I didn't know the news until my teacher told it to me.
2. I couldn't know the news unless my teacher told it to me.
3.-Was his father very strict with him when he was at school?
-Y es. He had never praised him until he became one of the top students in his grade.
析:句1动词didn't know表明该句强调时间的延续,表"我不知道这消息"的状态一直延续到"老师告诉我",因此应用until引导时间状语从句。句2动词couldn't know表明该句强调条件,表"我不可能知道这消息,除非老师告诉我",因此应用unless引导条件状语从句。句3表明"他爸爸从来没有表扬他"的状态一直延续到"他变成年级最好的学生之一",因此也应用until引导时间状语从句。
二、作为从属连词引导的从句常用一般现在时表示将来
unless引导的条件状语从句和until引导的时间状语从句常用一般现在时表示将来。
例1:除非邀请你否则别进来。
误:Don't come in unless you will be invited to.
正:Don't come in unless you're invited to.
例2:除非他来,我们不可能去。
误:Unless he will come, we won't be able to go.
正:Unless he comes, we won't be able to go.
三、作为从属连词引导的状语从句可转换为省略式创新句型
unless引导条件状语从句和until引导时间状语从句时,如果主从句主语一致(或主从句主语不一致,但从句主语为it),从句谓语部分含有be,可将从句主语和动词be省略,构成省略式创新句型。
例1:I won't come to see you unless I am asked to. 除非你邀请我,我才会来看你。
析:因为主从句主语一致,从句谓语又含有am,所以可将从句主语I和动词am 省略,构成省略式创新句型:I won't come to see you unless asked to.
例2:The soldiers will not cross the river unless they are ordered to. 除非接到命令,战士们不会过河。
析:因为主从句主语一致,从句谓语又含有are,所以可将从句主语they和动词are省略,构成省略式创新句型:The soldiers will not cross the river unless ordered to.
注意:
until也可作为介词。例如:
I have remembered her until now. 直到现在我还记得她。
all the same 仍然,照样的as regards 关于,至于anything but 根本不as a matter of fact 实际上 apart from 除...外(有/无) as a rule 通常,照例 as a result(of) 因此,由于as far as ...be concerned 就...而言as far as 远至,到...程度as for 至于,关于 as follows 如下as if 好像,仿怫 as good as 和...几乎一样as usual 像平常一样,照例 as to 至于,关于all right 令人满意的;可以 as well 同样,也,还as well as 除...外(也),即...又
aside from 除...外(还有) at a loss 茫然,不知所措 at a time 一次,每次at all 丝毫(不),一点也不 at all costs 不惜一切代价at all events 不管怎样,无论如何at all times 随时,总是at any rate 无论如何,至少 at best 充其量,至多at first 最初,起先 at first sight 乍一看,初看起来at hand 在手边,在附近 at heart 内心里,本质上at home 在家,在国内 at intervals 不时,每隔... at large 大多数,未被捕获的 at least 至少at last 终于 at length 最终,终于at most 至多,不超过
at no time 从不,决不by accident 偶然 at one time 曾经,一度;同时at present 目前,现在 at sb’s disposal 任...处理at the cost of 以...为代价 at the mercy of 任凭...摆布at the moment 此刻,目前 at this rate 照此速度 at times 有时,间或back and forth 来回地,反复地 back of 在...后面before long 不久以后 beside point 离题的,不相干的beyond question 毫无疑问by air 通过航空途径by all means 尽一切办法,务必 by and by 不久,迟早by chance 偶然,碰巧
人教版九年级英语unit11 第十一单元语法知识及练习题make 的用法： make用作使役动词，表示使.…;让.?…1) make sb dO使某人做某事 eg: The boss makes them work for 10 hours a day. 2) be made to do sth:被迫做某事 eg: She was made to wait for over an hour她被迫等了一个多小时. 3) make sb + adj 使: 某人. eg: I will try my best to make her happy.我会尽一切努力使她幸福. 4) make sb + n 使: 某人成为,(名词前不用加冠词) eg: We made him our monitor. 我们选他为班长. 5) make sb +介词短语:使某人处于某种状态 eg: Sit down and please make yourself at home请坐，不要拘束. 6) make it + adj + to do sth：使得..…是.. 的 eg: Mr Zhao makes it interesting to read赵老师使得阅读变得很有趣. 7) make it +时间：时间约定在.. eg: Let us make it half past two让我们把时间约定在2:30吧. 练习试题： 1. The peaceful music in the CD made the students _____ relaxed. A.feel B.feels C.felt D.to feel 2. Why didn 't Tom o out and play with us yesterday? Because he was made ____ his own clothes by his mother.A.wash B.washed C.to wash D.washing 3. The loud music may make people ___ fast.
?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)
四级语法 一：时态：所谓的"时态"，就是时间+状态。谓语动词的时态见下表： 1．主动形式 过去 现在 将来 过去将来 2．被动形式 过去 现在 将来 过去将来 时。 时间状语从句当中的时态： 一般过去时 所有的过去 用 一般现在时 表示 现在和将来 现在完成时 现在完成和将来完成 一．非谓语动词 一．不定式： 一）不定式的常考形式： 一般 did do will/shall do should/would do 进行 was/were doing am/is/are doing will/shall be doing / 完成 had done have/has done will/shall have done should/would have done 用于虚拟语气 完成进行 had been doing have/has been doing / / 一般 was/were given am/is/are given will/shall be given should/would be given 进行 was/were being given am/is/are being given / / 完成 had been given have/has been given will/shall have been given should/would have been given 完成进行 / / /
1)一般形式：He decided to work harder in order to catch up with the others. 被动形式: He preferred to be assigned some heavier work to do. 语法功能：表示与谓语动词同步发生 2)完成形式：He pretended not to have seen me. 被动形式：The book is said to have been translated into many languages. 语法功能：表示发生在谓语动词之前 二）不定式常考的考点： 1）不定式做定语----将要发生 2）不定式做状语----目的 3）不定式充当名词功能---To see is to believe. 三)不定式的省略 1)感官动词 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do 表示动作的完整性，真实性； + doing表示动作的连续性，进行性 I saw him work in the garden yesterday. 昨天我看见他在花园里干活了。(强调"我看见了"这个事实) I saw him working in the garden yesterday. 昨天我见他正在花园里干活。（强调"我见他正干活"这个动作） 感官动词后面接形容词而不是副词：The cake tastes good; It feels comfortable. 2) 使役动词 have bid make let 等词后不定式要省略但同1)一样被动以后要还原to I ‘d like to have John do it. I have my package weighed. Paul doesn’t have t o be made to learn. 3) help help sb do help sb to do help do help to do 四)有些动词后只跟不定式如： want，wish，hope，manage，promise，refuse，pretend，plan， offer，decide，agree，expect allow sb to do, cause sb to do , permit sb to do, enable sb to do force sb to do. be more likely to do love to do warn sb to do be able to do be ambitious to do. begin to do . start to do 五) 有的时候to后面要接-ing形式 accustom (oneself) to; be accustomed to; face up to; in addition to; look forward to; object to; be reduced to; resign oneself to; be resigned to; resort to; sink to; be used to; be alternative to; be close/closeness to; be dedication/dedicated to; be opposition/opposed to; be similarity/similar to.
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
四级语法 一：时态：所谓的"时态"，就是时间+状态。谓语动词的时态见下表： 1．主动形式 2．被动形式 CET-4 常考的三种时态：过去完成时；将来完成时；（现在/过去）完成进行时。 时间状语从句当中的时态： 一般过去时 所有的过去 用 一般现在时 表示 现在和将来 现在完成时 现在完成和将来完成 一．非谓语动词 一．不定式： 一）不定式的常考形式： 1) 一般形式：He decided to work harder in order to catch up with the others. 被动形式: He preferred to be assigned some heavier work to do. 语法功能： 表示与谓语动词同步发生 过去 现在 将来 过去将来 一般 did do will/shall do should/would do 进行 was/were doing am/is/are doing will/shall be doing / 完成 had done have/has done will/shall have done should/would have done 用于虚 拟语气 完成进行 had been doing have/has been doing / / 过去 现在 将来 过去将来 一般 was/were given am/is/are given will/shall be given should/would be given 进行 was/were being given am/is/are being given / / 完成 had been given have/has been given will/shall have been given should/would have been given 完成进行 / / /
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 ...
Unit 1-4词汇及语法复习题（二） 单句语法填空： 1. The __________________ (hunt) were awaiting the animals in the forest. 2. The girls were playing tricks ______ their new classmates. 3. She was overjoyed to hear about ______________ (arrive) of the baby. 4. The more he worked, the more _______________ (energy) he became. 5. This shop sells goods ______ all kinds. 6. Will you lend me your jacket ______ a little while? 7. He is proud _____ his great success ____ in scientific researches. 8. The activity is bound to get all of us to have fun _______ each other. 9. The garden, ______________ (cover) with flowers, looks as if it is dressed in colorful clothes. 10. People can either give it as a gift to friends ____ hang it in their houses as a decoration. 11. We don’t permit ______________ (smoke) here. 12. We don’t permit you __________________ (smoke) here. 13. She pulled the ____________ (drown) man from the water and gave him first aid. 14. She reminds me _____ the party. 15. She reminds me ____________ (go) to the party. 16. Paula was driving __________ a car crashed into hers. 17. Keeping a _____________ (balance) diet and taking exercise regularly are recognized _____ a healthy lifestyle. 18. If you are _______________ (curiosity) about the history of our school, you mustn’t miss the chance! 19. To our surprise, he should get away _________ cheating in that business. 20. No other book has a _____________ (great) effect on my life than this one. 21. Fossil fuels are ___________ (limit). 22. Travelling is ________________ (benefit) to us. 23. Tina is such a good teacher __________ we all respect her. 24. You will end up ____ debt if you keep on spending money like that. 25. The patient was ____________ (permit) to get out of bed after 10 days’ rest. 26. It describes a happy scene ____________ people are singing and dancing happily. 27. I saw bird watchers who ___________ (spot) a bird, immediately looked it up in field guides. 28. His illness accounted ________ his absence from school. 29. I think _____ necessary that classic poetry should be included in textbooks. 30. I wonder ____________ you are available to attend my wedding. 31. My main concern is ____________ he lacks experience. 32. I understand __________ you feel and we’ll try our best to help you out. 33. Table manners are __________ you should pay attention to. 34. Let’s wait and see _____________ shop will offer the best service. 35. Can I speak to _________________ is in charge of the project?
语法大全之目录 1.名词 2.冠词和数词 3.代词 4.形容词和副词 5.动词 6.动名词 7.动词不定式 8.特殊词精讲 9.分词 10.独立主格 11.动词的时态 12.动词的语态 13.句子的种类 14.倒装 15.主谓一致 16.虚拟语气 17.名词性从句 18.定语从句 19.状语从句 20.连词 21.情态动词 1. 名词 名词可以分为专有名词（Proper Nouns）和普通名词(Common Nouns），专有名词是某个（些）人，地方，机构等专有的名称，如Beijing，China等。普通名词是一类人或东西或是一个抽象概念的名词，如：book，sadness等。普通名词又可分为下面四类： 1）个体名词（Individual Nouns）：表示某类人或东西中的个体，如：gun。 2）集体名词（Collective Nouns）：表示若干个个体组成的集合体，如：family。 3）物质名词（Material Nouns）：表示无法分为个体的实物，如：air。 4）抽象名词（Abstract Nouns）：表示动作、状态、品质、感情等抽象概念，如：work。 个体名词和集体名词可以用数目来计算，称为可数名词（Countable Nouns），物质名词和抽象名词一般无法用数目计算，称为不可数名词（Uncountable Nouns）。归纳一下，名词的分类可以下图表示：_______________________________________ ||专有名词|| | 名|| 个体名词|| |||| 可数名词| ||| 集体名词|| ||普通名词||| | 词|| 物质名词||
【专项突破】：Unit3 语法句型全练 一、单项选择。 1. —Call me up if it’s to you tonight. —Sure. A. nice B. convenient C. uncrowded D. organized 2. Do n’t open the door to strangers; it’s not. A. safe B. polite C. convincing D. embarrassing 3. The hamburger not only smells good but also tastes . A. awful B. bad C. delicious D. salty 4. I hear it’s a experience to visit the caves and many people go there every day. A. terrifying B. fascinating C. boring D. frustrating 5. A da y! Don’t you want to go out for a walk with us? A. beautiful B. scary C. disappointing D. crucial 二、根据括号内的要求完成句子，每空一词。 1. Fun Times Park is a great place for children to play.（对画线部分提问） a great place for children to play? 2. They wanted to visit the world’s largest park.（对画线部分提问） they want to visit? 3. We can find good food in the restaurant.（对画线部分提问） can find in the restaurant? 4. Everyone has learned something at school.（改为否定句） has learned at school. 5. My grandma didn't know which bus she should take.（改为同义句） My grandma didn’t know which bus. 三、根据下面的对话情景，在每个空白处填上一个适当的句子,使对话的意义连
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.
★指代（后行）it: 1.It的基本用法是用来指代上文所提到的事物。如： Whatever you do or say, ask yourself whether it is in the interests of the people. A: Pass me a blue pen. B: Here it is / Here you are. 2.it, that, one, the one, ones, the ones 用于指代用法时的区别: （1）it代替上文提及的原物(复数用they)；one指代上文提及的、泛指的可数名词单数（复数ones）；that指代上文提及的定指的可数名词单数或不可数名词（复数those）, the ones 相当于these, those。 There is a river along the village. ______ is a river with a long history. The red pen is on the desk and ______ is Tom's. This pen is mine and ______ is Tom's. This pen is mine and ______ on the desk is Tom's. Mother bought a new bike and gave ________ to me. My mother bought me a new dictionary and her mother will buy her _____ too. Milk with sugar tastes better than ________ without sugar. A pencil with rubber is more useful than ________ without rubber. Bikes made in Shanghai are better than ________ made in Changsha. （2）用以代替提示代词this, that。 —What’s this? —It’s a knife. —Whose watch is that? —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 with 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 night. 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） 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、probable、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 + … 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. It is in a small factory that my brother is going to work.（注意上述各句均为强调句型的“考点”） 比较：It is a small factory where my brother is going to work.（定语从句） （6）It is said/reported/ann ounced/ (well) known … that… （7）It is/was + 时间+ since … 从……已多久了。 It is three years since I met him in Beijing. It was a long time since I (had) lived in that small mountain village with these farmers.（注意两句中的时态）