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1it用法讲解

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it用法完全归一、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. 指人一般说来，在指代身份或性别明确的人时，通常要根据情况用代词he／she；若是指代身份或性别不明的人，则用代词it：I don't know who it is．我不知道那是谁。

Someone must have been here．But we have no idea who it was．一定有人来过，但我们不知道是谁。

There was somebody standing in front of the shop， but I couldn't see who it was．商店前站着一个人，但我没看清是谁。

A：Who has let out the secret？是谁泄漏了秘密？B：It must be a big mouth．一定是个快嘴。

A：I hear a knock at the door．我听见有人在敲门。

B：It must be the postman．一定是邮递员来了。

A：Do you know who that is？你知道那个人是谁吗？B：I suppose it is Mary's father．我想那是玛丽的父亲。

it 指人主要用于指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○1.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。

○2.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”)○3.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)○4.it的重要句型1.强调句① It is/was + 被强调部分 + that/who ... 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，表语或状语，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 about 600 years ago that the first clock with a face and an hour hand was made.It was they that (who ) cleaned the classroom yesterday.It was in the street that I met her father.It was yesterday that I met her in the street.It is you that /who are wrong.I think it was Jack said this.(其中省略了who 或that)What is it you want me to do?(it 后省略了that)②It is 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.2. 用于指时间的专用句型中:It’s + 时间段 + since-从句. 自从……有一段时间了。

It’s + 时间段 + before-从句. 过多长的时间才……It + is/ has been ( wa s/ had been) + time + since…(现在/完成since-一般过去时) It is three years since she began to settle down in New York.（现在开始）It is ( has been ) 5 years since his father died.It is years since I enjoyed myself so much.It is .... since ...。

该句型主要用作处理瞬间动词的完成时，又要和表示一段时间的时间状语连用的问题，主句中是时间作表语，其时态是现在时或完成时，since 引导的从句通常是一般过去时态，而且是瞬间动词。

如果主句是一般过去时，从句则用过去完成时。

It was 3 years since they had got married.（过去开始）若since引导的状语从句的谓语动词是持续性动词或表示状态的动词的过去时，则从句表示的时间是“从那个持续动作或状态结束时算起”。

如：It is already three years since he was a teacher.他不当教师已经三年了。

It is half a month since he was a League member. 他退团半个月了。

It’s been quite some time since I was in London. 我离开伦敦已很长时间了。

比较：He has written to me frequently since I was ill. 自从我病愈以来，他经常给我写信。

（从句谓语为状态动词）He has written to me frequently since I fell ill.自从我生病以来，他就经常给我写信。

（从句谓语为终止性动词）3. It + is/ will be + time + before…（过去/将来before-过去/一般现在时）It won’t be long before we take the final examination.It will be two weeks before we take the final examination.It was 3 days before he went to Beijing.It will be not long before he finishes his job.It be ... before ... 该句型主句中的 it 指时间，主句中的时态常是一般过去时或一般将来时两种时态．主句中的表语多是long， not long ， 3 days ， 2 weeks 等表示时间段的词或短语，常译为＂．．．之后．．．＂。

4.It is ... when ...。

该句型中的 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，常译为＂当．．．的时候，是．．．＂It was 5 o’clock when he came here.5. It doesn’t matter whether ( if ) ... 该句型中whether(if) 引导的从句是真正主语，该句型常译为＂不论（是否）．．．没关系．．．。

It doesn’t matter if they are old.6. It looks ( seems ) as if ... 该句型中it无意义， as if 引导一个状语从句。

常译为，＂看起来好象．．．＂如果与事实不相符合，则用虚拟语气。

It looks as if he is ill.（真的病了）It looks as if he were ill. （没有生病）It seemed as if he were dying.It looks as if it hasn't been washed following the instructions.7.固定句型1. make it（1）在口语当中相当于succeed，表示：成功、做到、说定、赶上、及时到达例It's hard to make it to the top in show business.（2）在口语中相当于fix the date for，表示“约定好时间”例—Shall we meet next week？—OK. We just make it next Saturday.2. as it is（1）相当于in fact，in reality表示“事实上，实际情况是……”例 We had planed to finish the task today，but as it is we probably won't finish it until next week.（2）相当于方式状语从句，表示“照原样”例 Leave the table as it is.3. as it were相当于as one might say，that is to say，表示“也就是说，可以说，换句话说”例 He is，as it were，a modern Sherlock Holmes.4. if it weren't for…/if it hadn't been for…用来引导虚拟语气，相当于without，or but for，表示“如果不是……，要不是……”例 If it weren't for Tom，I wouldn't be alive today.5. that's it（1）相当于That's all. That's so much. 表示“至此为止，没有别的了”例 You can have one more sweet，and that's it.（2）相当于 That's right.表示“对啦”例— I guess the key to the problem is the choice “A”—That's it.6. catch it在口语中，相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂，受责备，受批评，受惩罚”例 We'll really catch it from our teacher if we're late for class again.7. have it（1）相当于say，insist表示“说，主张，表明，硬说”例 Rumour has it that they are getting divorced.（2）相当于get to know something，表示“了解，知道，获悉”例 I had it from John that she was going abroad.8. have what it takes在口语中，相当于be well qualified for，表示“具有成功的条件”例 You can take it from me that your daughter has what it takes to be a star.9. so it seems / appears.10. Keep at it！（Don't give up！）相当于go on，表示“继续做，不放弃”例 My teacher asked me to keep at it.11. Go it！（Go on！）拼命干，莽撞12. Now you have done it！（You have done sth. wrong.）13. Now you'll catch it！（You'll be punished.）14. As it happened，…在口语中，相当于it's a pity that…，表示“真不凑巧，真遗憾”例 As it happened，they were out.15. As it turned out，…在口语中，相当于it was found to be in the end，表示“最后被证明是”例 As it turned out，his statement was false.16. Such as it is（they are）在口语中，相当于although it may not be worth much，表示“虽然没有多大价值”例 You can borrow my exam notebook，such as it is.17. Take it/things easy.相当于Don't worry or don't hurry. 用来劝告别人，表示“不要慌，别担心，存住气”例 Take it easy！ He will do it well.18. Take it from me.在口语中，相当于believe me what I say.表示“请相信我的话，我敢担保”例 You can take it from me that he will make it this time.19. For what it is worth…在口语中，相当于although I'm not sure it's of value，表示“不管其价值如何”例 Here is the article I promise you，for what it's worth.20. Worth it在口语中，相当于useful，表示“有好处，值得做”例 Don't hesitate about it！ It's worth it.21. Believe it or not.表示“信不信由你”例 Believe it or not，Tom is getting married to Mary next Sunday. 22. Take it or leave it.v. 要么接受要么放弃例 That is my last offer. You can take it or leave it.23. It all depends/that all depends在口语中，相当于it hasn't been decided yet，表示“那得看情况，还没有定下来”例—Are you going to the countryside for holiday？—It/That all depends.24. It's up to sb.在口语中，相当于it's decided by sb. 表示“由……决定，由……负责，取决于……”例—Shall we go out for dinner？—It's up to you.25..It is my turn.(轮到我了)三、it作形式主语，替代不定式，ing形式或主语从句⑴作形式主语替代主语从句1.①. 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。

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区别+例题代词it__one__that和those用法说明[1]

区别+例题代词it__one__that和those用法说明[1]

代词it, one, that和those用法说明为了避免重复出现前面已经出现的名词，常用it, one, that, those来替代。

这几个替代词是高考中的一个常考点。

现将各个替代词的用法归纳如下：用法说明一：it和that都替代“the+单数名词(可数或不可数)”，都是特指，都可替代可数和不可数名词，但it指前面提到的“同一”事物，而that是指前面提到的“同类”事物。

如：My father bought me a pen and I like it very much.我父亲给我买了一支钢笔，我非常喜欢它。

(it替代the pen，指前面提到的父亲给我买的那支钢笔)This dictionary is more useful than that (=the one)I bought yesterday.这本词典比我昨天买的更有用。

(that替代the dictionary，与前面的this dictionary是同类)用法说明二：one替代“a＋单数可数名词”，表示泛指；其复数形式ones替代泛指的复数名词。

特指的the one相当于that，替代“the+单数名词”；the one的复数形式the ones，替代“the+复数名词”，在口语中也常用those代替。

当后面有of短语时，多用that 或those；当有前置修饰语时，只能用one(s)。

另外，one(s), the one(s), those 都只能替代可数名词。

如：Radios are useful for me to learn English. I’d like to buy one.收音机对我学英语很有用，我想买一台。

(one替代a radio，是泛指收音机这类东西中的一台) We still have shortcomings，and they are very big ones too.我们还有缺点，而且是很大的缺点。

七年级上册Unit 1 人教版英语中考一轮复习(词汇+语法讲解)

七年级上册Unit 1 人教版英语中考一轮复习(词汇+语法讲解)

一轮复习:七上U1 词汇+语法讲解【单词默写】【单词变形】【单词变性】friend名词变形容词______________meet动词变名词______________【一词多义】1. name _________________ ________________ His name is “Gravy”.He is named “Gravy”.【词汇用法】1. middle: in the middle of近义词辨析: middle vs. centre vs. among vs. between middle: n./in the middle ofcentre: n./in the centre ofamong: prep./among the threebetween: prep./between the couple2. first:first…second…last…first namethe first3. too: 放在句末，用于肯定句中/too…to近义词辨析: either vs. too vs. alsoeither: 放在句末，用于否定或疑问句too: 放在句末，用于肯定句中also: 放在句中，用于肯定句中近义词辨析: too…to vs. so…that/such…that too…to: too adj./adv. to do sth. 太…而不能so…that: so adj./adv. that +从句如此…以至于such…that: such NP that +从句如此…以至于NP=noun phrase (a/an)+(adj.)+n.4. and: 并列句连词，and 前后(形式/时态/感情色彩/词性)一致bigger and bigger 形式一致more and more beautiful 形式一致He teaches and likes us very much. 时态一致He has helped me and done all the work. 时态一致happy and excited 感情色彩一致ideas and thoughts 词性一致【攻占语法】人称代词一、人称代词的分类: 主格_______, _________, _________, _________, _________, _________, _________, _________,宾格_______, _________, _________,_________,_________,_________,_________,_________, 形容词性物主代词_______, _________, _________,_________,_________,_________,_________,_________, 名词性物主代词_______, _________, _________,_________,_________,_________,_________,_________, 反身代词_______, _________, _________,_________,_________,_________,_________,_________,二、人称代词的位置: 主格放在__________________ 前面, 做_____________成分, 宾格放在________________ 后面，做_____________成分,形容词性物主代词相当于__________, 放在________________ 前面, 名词性物主代词相当于____________, 放在__________________前面或后面三、人称代词的用法1. 指代作用(指代离它最近且与句意连贯的名词)I have a friend. He studies in a middle school. He 指代a friendI study in a school near the street. I learn English in it. It 指代a schoolI have two sisters. Their room is beside mine. Their 指代sisters’Our room is here, and yours is there. Yours 指代your room2. it的用法1) it 作为形式主语或形式宾语find/feel/think +it +adj. to do sth.I find it interesting to learn English.It is +adj. for sb./of sb. to do sth.It is important for me to pass the exam.2) it vs. them vs. one vs. that vs. onesit 指代同名同物，可指代可数或不可数名词，表示单数one 指代同名异物，可指代可数名词，表示单数them 指代同名同物，可指代可数名词，表示复数that 指代同名同物，可指代可数名词或不可数名词，表示单数ones 指代同名异物，可指代可数名词，表示复数those 指代同名同物，可指代可数名词，表示复数3. 反身代词1) 反身代词做宾语，放在动词后面，表示主宾一致I taught myself English.2) 反身代词做宾语，放在介词后面，表示特殊意思I need to see the tower for myself.3) 反身代词做同位语，放在名词后面，表示与强调The food itself is not very delicious.请在可以加反身代词的动词前打”√”□enjoy □teach □know □introduce□dress□work□help□make符合加反身代词的动词条件: _____________________________________________________数词一、数词的分类: 基数词表示__________________________, 序数词表示_______________________二、数词的位置: 放在__________________前面三、数词的用法:1. 基数词与序数词的转化2. 数字的活用表示年龄:10几岁: _______________ _________________ ________________ ____________________ ________________表示世纪:21世纪: _______________表示年代:20世纪80年代: ______________表示倍数:1倍: ______________ 2倍: ______________ 3倍: ______________表示百分比:10%: ______________50%: ______________100%: ______________3. 数词修饰名词three thousand teachers vs. three thousand of teachers vs. thousands of teachersthree thousand teachers _________________________________________________________________________ three thousand of teachers _______________________________________________________________________ thousands of teachers ___________________________________________________________________________【词汇练习】1.My pencil box is in my schoolbag a________ my schoolbag is under the desk.2.Huang Bo is a famous Chinese actor. He was born (出生) in C________.3.I have three books, and my mother brings me five books. Now I have e _______ books.4.Malia Obama is an American girl. Obama is her f ________ name.5.I was thirteen last year, and next Sunday will be my f_______ birthday.6.He has already eaten three cakes. And he wants to have a f ________ one.7.My f ________ Leo and Nick like playing basketball, but I like reading.8.This is my best friend. H_______name is Henry Smith.9.This is Alan Miller. His l________ name is Miller.10.Long time no see, Jack! I am very happy to m ________ you here.11.She studies in a m ________ school. She is going to be a teacher.12.It’s a n ________ day, and I want to take a walk in the park.13.Can you tell me your parents' telephone n ________? Your teacher needs them.14.Chinese President Xi Jinping paid his s ________visit to the U.S in September, at invitation of President Obama.In fact, he has been to the USA six times before.15.There are t ________ people in my family, my father, my mother, and me.【语法练习】1.__________________ is reported that 20% of the Amazon has disappeared in just 50 years.2.I brought the flowers to school and left _____________(it) in her office.3.Her father, a cook, took _______________(she) into the kitchen.4.I consider ________________(I) lucky to have had such a different experience.5.Reading articles or talking to friends online can also use up much of ________________(you) time. Don’t allowit.6.Some people try to become much happier by watching funny films. Others prefer dancing to their favorite songsor eating chocolate. Others do sports every day to put __________________(they) in a good mood.7.We would use___________________(we) brain to think about them or do more reading to find the answers.8.Carry those in a pocket or bag where no one can see _________________(they).9.Gradually, I found ________________(me) back, giving out my speech with a little difficulty.10.I know they care for me very much, but I hope to make decisions by _______________(I).11.What most agree on, though, is that ______________(they) homework should be connected with what they havelearned in class, and it should help the student consolidate(巩固) what he or she learned in class.12.He raised six children ________(he) after his wife died.13.In ________(he) opinion, choosing some ancient literature into the textbooks is a good way to introduce thebeauty of traditional Chinese culture to junior high school students. “It will prepare them to gain further knowledge of Chinese language”, he told China Daily.14.Anyway, I know you are working hard and that it is all for your future. So take care and I look forward to seeingyou soon. Please write back to ________(I) when you get the chance.15.On a very cold Saturday in January, I was told to take our dog out for a walk, but it was so cold that I didn’twant to go outside. Instead, I just opened the door and let the dog out by ________(he).16.First of all, they seem so far away from us. ______________(two), they seem dark and dangerous.17.Scientists find that people who eat spicy food once or _____________(two) a week live longer than those whoeat it less than once a week.18.Wu is a rookie in the club, as he joined it at the end of January. But in just his ________(five) appearance on thefield, he scored his first goal. Espanyol coach Rubi said “Wu is like a floating feather with great flexibility(灵活性) and speed.”19.People like to talk about “first”. They like to remember their first love or their first car. But not all firsts arehappy ________(one). Few people enjoy the firsts that are bad.20.The ______________(two) secret of happiness is to be active.【参考答案】friend名词变形容词friendlymeet动词变名词meeting1. name 名字，以…命名His name is “Gravy”.He is named “Gravy”.人称代词一、人称代词的分类: 主格I,you,he,she,it,we,you,they宾格me,you,him,her,it,us,you,them形容词性物主代词my,your,his,her,its,our,your,their名词性物主代词mine,yours,his,hers,its,ours,yours,theirs反身代词myself,yourself,himself,herself,itself,ourselves,yourselves,themselves二、人称代词的位置: 主格放在动词前面前面, 做主语成分,宾格放在动词或介词后面，做宾语成分,形容词性物主代词相当于形容词, 放在名词前面, 名词性物主代词相当于名词, 放在动词前面或后面请在可以加反身代词的动词前打”√”√enjoy √teach √know√introduce√dress□work√help √make符合加反身代词的动词条件: 动词后+sb.数词一、数词的分类: 基数词表示数数，多个，序数词表示第几，一个二、数词的位置: 放在名词前面三、数词的用法:1. 基数词与序数词的转化2. 数字的活用表示年龄:20几岁: in one’s twenties, when I was 20, on my twentieth birthday, at the age of twenty 表示世纪:21世纪: 21st century表示年代:20世纪80年代: in 1980s表示倍数:1倍: once2倍: twice3倍: three times表示百分比:10%: ten percent50%: fifty percent100%: one hundred percent3. 数词修饰名词three thousand teachers vs. three thousand of teachers vs. thousands of teachersthree thousand teachers 三千老师three thousand of teachers 所有老师中的三千人thousands of teachers 成千上万的老师【词汇练习】And China eight first fourteenth fourth friends His last meet middle nice number seventh three【语法练习】1.It 形式主语2.Them 指代flowers 为复数3.Her 动宾结构，做宾语4.Myself 主宾一致5.Your 形容词性物主代词+n.6.Themselves 主宾一致7.Our 形容词性物主代词+n.8.Them 指代those9.Myself 主宾一致10.Myself 主宾一致by oneself 独自11.Their 形容词性物主代词+n.12.Himself 反身代词做同位语，起强调作用13.His 形容词性物主代词+n.14.Me 介宾短语做宾语15.Himself 主宾一致by oneself 独自16.Second 序数词与first相呼应17.Twice 次数与once相呼应18.Fifth 序数词19.Ones 代词指代first20.Second 序数词the+序数词。

it will be和it will的用法

it will be和it will的用法

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小学英语_人称代词(1).ppt

小学英语_人称代词(1).ppt

5. Now ___th__e_y_______(her parents) are in America. 6. Those __c_h_i_l_d_r_e_n_ ( child ) are _m__y__ ( I ) father’s students.
exercises
7. Do you know __It_s___ ( it ) name? 8. Mike and Tom ___a_r_e_____ ( be ) friends.
这是你的狗。 这只狗是你的。 This is your dog. This dog is yours.
这些是你的狗。 这些狗是你的。 These are your dogs. These dogs are yours.
这是他的猫。 这只猫是他的。 This is his cat. This cat is his.
• she 用于主格 ，her用于宾格
• 练习： • 她是一名护士 ： S_h_e__ is a nurse. • 妈妈很爱她：Mother loves h__e_r_ very much. • 她很漂亮：Sh_e__ is very beautiful . • 你能帮助她：You can helph_e_r__
Michael: Whose shirt is this? Is this yours?
Simon: No, it isn’t. Mine is white. Ask Steven. His is blue.
Michael: Hi! Steven. Is this your shirt?
Steven: Let me have a look. Oh, yes, it’s mine.
5. (他们) __________ go to work on foot. . 6.(他) _______can sing an English song.