本文目录
英语it的用法总结
It的用法（专项总结）
一、人称代词
1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复:
①They watched the train until it disappeared in the distance.
2.，也可以指动物或婴儿(未知性别的婴儿或孩子):
②Is this your dog？No, it isn’t.
③They got a baby and it was a ten-pounder
3.，也可指抽象事物或指抽象环境和情景:
③I hate it when people talk with a full mouth.．
二、.非人称代词
1.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等：
⑴.指天气：It is a lovely day, isn’t it? ⑵.指时间: It was nearly midnight when she came back.
⑶.指日期:It is April First today. ⑷.指距离:It is some 3000 kilometers from A to B.
⑸.指价值:It is three dollars. ⑹.指温度:Today it is 30 degrees centigrade.
三、其他用法
1.在句子的主语不太明确时充当主语，表示谁在做某事：
①Who is it there? It's I (me/you/he.....). ②I thought it was Mary, but it was not she.
③Her face lighted when she saw who it was.
2.泛泛的指某件事： (有时泛指一般情况)
①It doesn’t matter. ②It is a shame, isn’t it? ③How is it going?(情况怎样)
④It says in the newspaper that......
3.it用在一些词组中，it 没有特别的意思
The last train's gone. Come on, we'll foot it.(来，咱们步行吧。)
四、作形式主语，替代主语从句，动词不定式，或动名词短语：
1.作形式主语替代主语从句
⑴It is clear ( obvious， true， possible， certain....) that 从句 常译为＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂
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.
⑵It is important ( necessary， right， strange， natural...) that 从句 常译为┅是重要的(必要的,对的,奇怪的,自然的┅).that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。
①It is important that we (should) learn English well.②It is necessary that he (should) remember these words.
⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that 从句 常译为＂据说（据报道，据悉．．．）＂。
①It is said that he has come to Beijing. ②It is reported that another earth satellite has been put into orbit.
⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that 从句.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．．．）
①It is suggested that the meeting ( should ) be put off.
②It was ordered that we ( should ) arrive there in two hours.
⑸It is time ( about time ，high time ) that从句(虚拟语气:动词用过去时did)
① It is time that children went to bed.
⑹It is the first ( second ... ) time that从句(从句用现在完成时 have done )
It was …(从句用过去完成时had done )常译为＂是第一（二）．．．次．．．＂。
It is the first time I have been here. = This is the first time I have been here
⑺It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that从句.
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。
①It is a pity that such a thing ( should ) happen in your class. 这种事竟然发生在你们班上，真是遗憾！
②It is a pity that he is ill. 他生病了，真遗憾！
⑻It happens (seems， looks， appears ) that从句.常译为 “ 碰巧…,似乎是…,看起来…”
①It happened ( so happened ) that he met his teacher in the street. 碰巧．．.
②It seems that he will be back in a few days. 看来．．．
2.作形式主语替代不定式
. ⑴ It is kind ( of sb. ) to do sth. 不定式的逻辑主语是由 of引起，主句中的形容词必须是能表示逻辑主语特征的褒义或贬义形容词。 常见的词有：
bad ， brave ， careless， clever ， cruel ， foolish ， good （好心的）， honest ， horrible ， kind ， lazy ， modest ， naughty ， nice（有教养的）， polite， rude ， silly ， stupid ， wise ， wrong（错误的）等。 这个句型可以改写为：sb. is kind to do sth. 。 如:It is kind of you to say so. = You are kind to say so.
⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的中性形容词。 常见的形容词有：
important， necessary， natural easy ， safe ， common ， normal ， hard ， difficult ， dangerous ， unusual， rare ， impossible ， pleasant
如:It is important for her to come to the party. = It is important that she (should ) come to the party.
⑶It takes sb. ... to do sth. 常译为＂做．．．要花费某人．．．＂。
如:It took thousands of people many years to build the Great Wall.
3.作形式主语替代动名词短语
It is no good / no use / useless doing sth. 常译为 “┅有好处或没有用”
①It is no good learning English without speaking English.
②It's useless trying to argue with Shylock.
五、作形式宾语，代替不定式，动名词短语或宾语从句。
We think it important to learn a foreign language.
该句型中的it 作形式宾语，该结构中常用的动词有：think, believe, make ,find consider, feel； 如:
We think it our duty to clean our classroom every day.
He felt it important learning English well.
They found it difficult that they would finish their work in two days.
The Internet makes it easier for companies to keep in touch with customers.
CF: keep sth, in mind / keep in mind that
六、.it的重要句型
1.强调句型: It is/was + 被强调部分 + that 从句 (被强调的主语如果是人，that可以由who换用)
①It was about 600 years ago that the first clock with a face and an hour hand was made.
②It was they that (who ) cleaned the classroom yesterday.
特例:It 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.
凡士林的用法大全
It 用法大全
一、指无生命、动物、植物和在性别不计或不详时指人和婴儿。There is a person knocking at the door. Who can it be?
二、指心目中的人或上文中提到的人或事物，这那它 He is fifty-two, but doesn't look it.
Jim is ill. Have you heard of it?
三、可以代替指示代词this和that
What's this/that？ ------It's a book。
四、作无人称代词的主语，表时间、天气、距离、温度、环境和情况。It was noisy when I got to the room.
五--表含糊概念，无补语，指从句叙述内容。
I hate it that I've made so many mistakes.
I hate it when you can't discuss things openly.
You may depend on it they are valuable.
How's it going with you? 近况如何？
Does it itch much? 很痒痒吗？
Where does it hurt? 哪儿疼？
Now you are in for it. 现在你可以到家了。
It says in the Bible, "Thou shalt not steal." 《圣经》上说："勿偷窃。" Hang it all, we can't wait all day for him.见鬼，我们不能整天等他呀！ There is nothing else for it but to stand. 别无他法，只好忍受。Whose turn is it next? 接下来轮到谁了You never had it so good. 日子从来没有这样好。Take it easy. 放松点！不要紧张！
How is it in the market? 超市情况如何？
六----强调句中使用"It is/was+强调部分 （主语，宾语等）+that/who+其余部分"。如果强调的是特殊疑问句，表示"究竟，到底"等语气时，就用结构："疑问词+is/was it that +句子"，如：Where was it that you met him? What is it that he wants to see? When was it that you saw him?
Why is it that you want to change your idea?
这类强调句也可用作表语或宾语。The question is which book it is that you want to buy.
He found out who it was that saved the drowning boy.
如果强调谓语，谓语动词部分的语气用do，does，did，常译作"的确，千万，真的"
Do be patient! 千万要耐心！He does speak English well。He said he would come and did come.
七、作形式宾语
a) 谓语动词appreciate, dislike, like, hate, love, make (按时到达，成功)等后接由if或when 等引导的宾语从句时，往往在前面加上形式宾语it。 I would appreciate it if you could come to my birthday party.
2、动词have（表明，坚持说）、take（认为，猜想）、hide（隐藏）、publish（公布）、put（表达，写出来）等后接由that引导的宾语从句时，往往在从句的前面加上形式宾语。I take it that you will be leaving Shanghai soon.我认为你不久就离开上海。
We published it that we had finished the project ahead of time. 我宣布我们已经提前完成了这项工程。
3、 动词短语allow for（担保）、count on（期待）、depend on（依靠）、insist on（坚持）、see to（确保）等后接that引导的宾语从句时，必须冠以形式宾语it。 如：I am counting on it that you will come. 我们期待着你的到来。
She'll see to it that he goes ahead。 她确保让他先走。
八、 作形式主语-it作形式主语，真正的主语可以是to do，doing 和clause等
It 做形式主语，真正的主语是动名词，这类结构是it be + adjective/noun + doing, 这类词有nice, good, useless, hard, foolish, enjoyable, worthwhile, 和名词use, good, fun, job, a waste of 等。如：It is no use trying to argue with Shylock.
It 作形式主语时，常用于下列四种结构，且由固定译法
a) it + be + noun + that-clause
it is a fact that…事实上是……
it is common knowledge that众所周知的是……
it is a question that………是个问题
it is a pity that…可惜的是……
it is a wonder that………真是个奇迹
it is a shame that…可耻的是……
it is an honor that…非常荣幸……
it is a common saying that…俗话说……
it is no good that………是没用的
it is no use that… 做……是无用的
it is one's turn to do 轮到……做……
it is one's duty to do 做……是……的职责
it is one's fault to do 做……是……的过错
it is worth that 可以看出…；可以说……；
it is no wonder that…难怪……
it is no good that..做……是没用的
it is no harm that做…是无害的，无妨是…
I think it would be a good idea to do 我认为做……是个好主意
it is a great joy/pleasure to do 高兴做……
it is a shame to do 做……不光彩
it is good manners to do 做……是有礼貌的
it is a waste of time to do…做……是浪费时间
b) it + be + adjective + that-clause
it is certain that…很肯定的是 ……
it is clear/evident that…很清楚……
it is unlikely that…未必会，不见得，不太可能
it is likely that…很可能……
it is better that…最好……
it is natural that…很自然……
it is necessary that...有必要……
it is obvious that … 很明显……
it is important that..重要的是……，……是重要的
it is impossible that………是不可能的
c) it + be + past participle + that-clause
it is said/reported that…据说/报道……
it is demanded that…按要求……
it is estimated that…据统计……
it is believed that… 据认为……；人们认为……
it can be said that…可以说……
it can be seen that …可见……，可以说……
it has been proved that…已经证明……
it has been shown that…业已表明……
it must be pointed that…必须指出……
it must be admitted that 必须指出/承认，
it must be realized that 必须意识到
it is acknowledged that... 应该承认……
it is announced that…据称……，有人宣称……
it is observed that… 值得注意的是……
it is arranged that….已经商定……
it is pointed out that….有人指出……
it is proposed that 有人提议…，一般认为……
it is regarded/thought that 人们认为……
it is considered that 人们认为…，据估计……
it is declared that…据宣称……，有人宣布
it is described that… 据说……，
it is expected that…人们希望……，预期……
it is generally accepted that通常人们认为……
it is believed/recognized that 普遍认为……
it is hoped that…人们希望……
it should be noted that 应该注意/指出。。。；it used to be said that ..常言道……
it was noted above that 如上所述……
it will be said that 有人会说……
it will be seen from that 由此可见……
it is stated that据称；据说；有人说；一般认为
it is suggested that 有人提议；据建议
it is supposed that 据推测；假定；人们猜测
it is usually considered that 通常认为
it is well known that 大家都知道，众所周知
it is not settled whether 是否……还未决定
d) it + be + intransitive verb + that-clause
it seems that/as if 好像是……
it happens/happened that 碰巧……
it follows that 由此可见……
it matters that 要紧的是……
it occurs/occurred to sb that 某人想到……
it struck me that 我突然想到……
it appears to …that ..在……看来似乎
it doesn't matter if/whether 即使……也无妨
it goes without saying that ……不言而喻
it is not until … that…直到……才……
it is up to somebody to do 该……做……
it remains to be proved that 尚待证明
it remains to be seen that 尚待分晓
it remains for sb to do 有待某人做……
it so fell out that 结果是，终于
it turned out that证明是，结果是
it is worth notice that 值得注意的是
it looks as if 看起来好像，似乎
it makes no difference that…都是一样，无区别
it is not just like sb to do 某人不会做……
it takes somebody something to do 某人花费……做……
九、习惯用法
it all depends=that depends 视情况而定
if it is convenient to you 如果你方面的话
believe it or not 信不信由你
take it easy 别着急，慢慢来，别紧张， as it is 但是实际上，其实
see (to it ) that 设法使，务必做到
what become of somebody/something 是……的结局，发生于
if it had not been for 若不是=but for
after what seemed +时间
it was not long before 不久就
cab it 乘车 brave it out 拼命干到底
walk it 步行 do/go it alone单枪匹马的干
beat it =go away 滚
make it =succeed in doing 办成功
come it 尽自己的分内事come it strong 做的过分lord it over 欺压take it out of sb 拿某人出气have it out with sb 和某人讲个明白be hard put to it 在艰难之中
You're it. 你下一个（用于儿童游戏中）
Is that it? = Is that all you wanted me for? 你要的就是这些吗？
十、 It's + adj + for/of somebody to do sth选择of 还是for，要根据形容词来决定，如果表示人的内在品质，后面引出的名词既是前面形容词的主语，也是动词不定式的逻辑主语，那么用of, 这类形容词有kind, brave, merciful, fine, cruel, selfish, stupid, clever, wise, unfair等；如果表示难易程度，可能性，等外在的特征，而且所引出的词只作后面动词不定式的主语，这类形容词有easy, difficult, hard, impossible, possible, convenient 等等。比如：
It is easy for you to make it.
It is impossible for him to walk 30 miles within one minute.
It is very kind of you to help me.
It is wise of you to take his advice.
十一、it 引起的容易混淆的时间句型
1、 it is/has been +段时间+since-clause 这个句型表示从since谓语动作发生以后到现在或过去所经过的一段时间，意思为："自从……以来已经多久了"，主句多采用一般现在时，从句用过去时，如果表示过去的情况，since 主句用一般过去时，从句用过去完成时，或主句用过去完成时，从句用一般过去时。要注意：since引导时间状语从句时，从句若使用终止性动词，则表示该时间是从现在算起的；若使用延续性的动词，则表示时间是从过去算起的。如：
It's five years since they got married.（从现在算起） It's five years since they were married. (从过去算起)
It is three years since his father passed away.
2、 it be +段时间+before-clause ---这个句型中的时间是段时间（long years, months, weeks, days, hours, minutes）,主句中的谓语动词用肯定式，意思为："过多长时间才……"。主句谓语动词是否定式时，意思为："没过多长时间就……"。主句的时态可用过去时was或将来时will be，用was时，before从句的时态用一般过去时，用will be时，从句常用一般现在时。如
It was not long before he learned those poems by heart.她没过多久就会背那些诗了。
It was long before the police arrived.
It will be hours before he makes a decision.
It will not be hours before we meet again.
3、 it be +点时间+when-clause这个句型中，it指时间，而且表示时间的词语前没有介词，时间为具体时间。主句中的谓语部分和从句中的谓语动词在时态上一般是一致的，主句是will be时，从句中用一般现在时替换将来时。如：It was already 8 o'clock we got there.
It will be late afternoon when they get there.
it be +时间+that-clause 此句型为强调句型
4、 it be +high/about 时间+that-clause 此句型是个虚拟语气句型，表示是该做……的时候了，此时无论主句中的be是什么时态，从句中的谓语动词一律用一般过去时或者should do，high和about是用以加强语气的。如：It is high time that we he went to school.
It is time that we should make people's life a little better.
6、It/This/That be the first(second/third…) time that-clause这个句型表示说话时为止某人的一种经历，关键是time前面的序数词，主句是is时，从句要用现在完成时，主句是一般过去时，从句要用过去完成时。
This is the first time (that) these Europeans have visited the Great Wall.
It was the fifth time (that) I had paid a friendly visit to America.
十二、下面的句型中用there而不用it。
There is something wrong with… ……有毛病
There is no doubt of/that 无疑……
There is no need for/to do 不需要做……
There is no denying 无可否认……
There is no hurry about 无需慌忙……
There is no difficulty in 在……方面没有困难
There is no help for ……没有办法
There is no deference between ……没有区别
There is no lack of 有很多的，不缺乏
There is no possibility of/that 没可能
There is no room for 没有……的余地
There is no sense in ……是没有意义的
There is no sign of 没有……的迹象
There is no saying that ……难以断言，很难说
There is a chance that/of 很可能
There is a possibility that/of有可能
There is a slim hope of ……有微小的希望
There is some difficulty in 在……有困难
There is some trouble in 在……有麻烦
There appears to be 似乎有
There seems to be似乎有，好像有
There used to be （过去）常常有，原来这里有
There was a time when从前曾经有一个时候
There is evidence that ……显然
There is no probability of/that很难有/会
it的用法
原意在英语中指代物的第三人称单数。itKK:[]DJ:[]pron.1.（指已提及或心目中的人或事物）这，那，它。2.（指无生命物、动植物、性别不详的幼孩等）它。3.（作无人称动词的主语，表示时间、气候、距离等）。4.（置于句首或句中，引导后面的短语或从句）。5.（作为形式上的主语或宾语，用于表示强调的句型中）。6.（用于某些动词、介词后面，词义含糊，构成习惯语）。n.[U]1.（捉迷藏等游戏的）捉人者，猜的人。2.【口】（仅用于ginandit）意大利苦艾酒。3.【口】关键，重要时刻。4.【口】性感；性交。5.笨蛋同义词thingn.事件，形势；东西，事物；家伙；事业复数形式things 1、人称代词IT
IT一般指物不指人，但可指小孩、婴儿和团体等。IT用于成人，有轻蔑的含义。
For example: Would you like to marry Malcom? Fancy being owned by that! Fancy seeing it every day!
2、指示代词IT
作为指示代词时，IT可以指人。
For example: Who is it？（是谁呀？）
3、非人称代词IT
(1)指时间
For example: I glanced at my watch. It was earlier than I thought.
(2)指距离
For example:
How far is it from your office to the bank?
It was a long journey to that part of the country.
(3)指天气等自然现象
For example:
Now it is clearing up, and a sparrow is beginning to chirp.
It’s damp and cold. I thingk it’s going to rain.
4、IT用于前指或后指
(1)前指
For example:
---They lost the game.
---Yes, so I hear. Isn’t it a shame?
(2) 后指
For example:
It’s seems so full of comfort and of strength, the night.
Though no one knew it, it was the last time he would be present at the bank.
注：代词it指代if或when等引导的状语从句时，既可前指，也可后指。
5、非确指的IT
有时，it所指代的是什么，要看上下文来确定。这种IT即所谓的非确指的it（Unspecified it）。
For example:
1.How’s it going with you? (你近况如何?)
2.Does it itch much? (很痒痒吗?)
3.Where does it hurt? (哪儿痛?)
4.Now you are in for it. (你现在可倒霉了!)
5.It says in the Bible: Thou shalt not steal. (圣经上说:不许偷窃。)
6.Hand it all, we can’t wait all day for him. (见鬼!我们不能整天等他呀.)
7.We had a nice time of it. (我们玩得很好。)
8.There is nothing else for it but to stand. (没有办法，只好忍受。)
9.You never had it so good. (日子过得从来没有这样好。)
10.Take it easy. (不要紧张。)
6、IT在习惯用语中
一些含有IT的习惯用语需要牢记，以下是一般对方都熟知的，无须要明确指出来。
For example:
1.Cab it (乘车)
2.brave it out (拼命干到底)
3.walk it (步行)
4.go it alone (单枪匹马地干)
5.beat it (走，滚)
6.make it (办成功)
7.come it (尽自己之分内事情)
8.come it strong (做得过分)
9.lord it over (欺压)
10.take it (猜想，以为，断定；[口][常与 can, be able to 连用]忍受得住(痛苦、批评、困难, 嘲笑等))
11.take it out of somebody (拿某人出气)
12.have it out with somebody (与某人讲个明白)
13.be hard put to it (在艰难之中)
14.Is that it? (你就要我做这些吗？= Is that all you wanted me for? )
15.You’re it. (你是下一个)
7、引词IT
（1）IT用做引词
A.形式主语
a.真实主语为不定式
For example:
It was his duty to attend to the matter. (处理那事是他的责任)
It was not within my power to answer the question. (我无能力回答这个问题)
b.真实主语为不定式复合结构
For example:
It is getting harder every day for a lazy man to get a living. (懒汉谋生是日益困难了)
What time would it be most convenient for me to call again? (何时我再给你打电话最合适?)
It’s very good of you to have listened to me. (感谢你,能听我讲.)
It’s very thoughtful and kind of you to offer me this lovely holiday. (您能给我这么美好的假日实在是想得太周到和太友善了)
c.真实主语为动名词
For example:
It’s no use saying any more about what I think. (我如何想的再说也没有用了.)
Do you think it’s worth while quarrelling with me? (你认为与我吵架值得吗?)
d.真实主语为动名词复合结构
For example:
It has been a great honor your coming to visit me. (你的来访是我很大的荣幸.)
It would have been so bad her overhearing. (她如果偷听到那就糟糕了.)
I’m afraid it vexes her my having brought Roly.(我恐怕我带罗力来使她生气了)
e.真实主语为主语从句
For example:
It seems that he is rich.. (看起来他很富有.)
It doesn’t matter what you do.（你干什么都没有关系）
It was clear enough what she meant.（她的意思十分清楚）
He was an old man, and it did not matter much where he lived.（他年事已高，在哪儿居住都无所谓）
It’ a pity he doesn’t swim. (他不会游泳，真遗憾)
B.形式宾语
a.真实宾语为不定时
For example:
I find it easy enough to get on with Pam.. (我觉得与帕姆相处很容易.)
I would think it worth while to go.（我认为去是值得的.）
He thought it best to be on his guard. (他认为他最好还是要警惕.)
He made it a rule to speak in Parliament at least once every session. (他规定自己在议会每次开会时至少发言一次.)
He felt it his duty to mention the fact to Mr. Otis. (他觉得把事实告诉奥蒂斯先生是他的职责)
b.真实主语为动名词
For example:
You must find it exciting working here.. (你一定会发现在此工作是很令人兴奋的.)
I think it very unwise going on as we are without definite agreement.（我认为我们没有明确的协议就进行是不明智的.）
He find it a great privation not being allowed to smoke there. (他觉得在那里不能吸烟对他是一大痛苦.)
注：以上例句皆可不用形式宾语，可改写为：
You must find working here exciting.
I think going on as we are without definite agreement very unwise.
He found not being allowed to smoke there a great privation.
c.真实宾语为宾语从句
For example:
I think it best that you should stay here. (我认为你最好留在这里.)
I used to feel it a terrible thing that my mother should have to toil so endlessly. （我曾老觉得母亲不得不无休止地操劳是一件可怕的事情.）
I take it you have been out. (我想你出去过了.)
I took it for granted that you would stay with us. (我认为你当然会留在我们这里的.)
I have it on my conscience that I offended you. (我心里老嘀咕着我得罪了你)
They kept it quiet that he was dead. (对于他的死他们没有透露一丝口风。)
（2）引词IT用于强调结构中
①英语中常用的强调结构是：“It is （was）+被强调的部分（主语、宾语或状语）+ who（that）…”。一般说来，被强调部分指人时用who，指物时用that（但that亦可指人）。注意：强调结构在强调状语时，只可用that从句，不可用which。
For example: John wore his best suit to the dance last night.（约翰昨晚他穿着他最好的一套衣服去参加舞会）
It was John who (that) wore his best suit to the dance last night.
It was his best suit (that) John wore to the dance last night.
It was last night (that) John wore his best suit to the dance.
It was to the dance that John wore his best suit last night.
②强调结构也可强调短语和从句(包括because，only when，who，whom，whose，that，which等引导的从句)。
For example:
I suspected it was on her orders that you were bringing him here.（我怀疑你是遵照她的吩咐要把他带到这儿来的）
It was because I wanted to buy a dictionary that I went to town yesterday. (我昨天是由于想买一本字典而进城的。)
It is only when you nearly lose someone that you become fully conscious of how much you value them（只有你差一点失去某一个人时，你才会充分意识到你是多么珍视他们。）
It must be your mother who (whom, that) you are thinking of.（你在想的一定是你的母亲。）
It was your brother to whom I offered a dollar for his knife yesterday.（我昨天给了你兄弟1元钱买他的小刀。）
It is Uncle Bill whose address I lost.（比尔叔叔的地址我丢了。）
It deserves attention that it is especially the verb to do which is often found in the active voice.（应该注意, 特别是行为动词常用在主动语态中。）
③表语与宾语补语偶尔也可为被强调的部分。但通常情况下，表语一般不可用作被强调的部分。
For example:
It was a doctor that he eventually became.（他最后成了一个医生）
It’s dark green that we’ve painted the kitchen.（我们把厨房漆成了深绿色）
④强调结构的时态一般应该一致。但也有例外的例子。
For example:
It is not I who am angry.（发怒的不是我。）
I was my two sisters who knew her best（是我的两个姐妹最了解他。）
I will not be you who will have to take the blame for this.（对此受责难的将不是你。）
For exceptional example:
It is Miss Williams who enjoyed reading novels as a pastime. (是威廉姆斯小姐以读小说来消遣。)
It is these very novels that Miss Williams enjoyed reading as a pastime.（威廉姆斯小姐作为消遣所读的小说就是这些。）
⑤强调结构不但可以用于独立句中，也可以用在从句之中。
For example:
It deserves attention that it is especially the verb to do which is often found in the active voice.（应该注意, 特别是行为动词常用在主动语态中。）
I suspected it was on her orders that you were bringing him here.（我怀疑你是遵照她的吩咐要把他带到这儿来的）
He told me that it was liberation that brought about a complete change in his life. （他告诉我是解放才使他的生活有了翻天覆地的变化。）
⑥强调结构中的that 与who在非正式文体中可以省略。有时还可以省去句首的It is （was）。
For example:
I suspected it was on her orders you were bringing him here.（我怀疑你是遵照她的吩咐要把他带到这儿来的）
A good, honest trade you are learning, Sir Peter! （彼得爵士，你学得是一种很好而诚实的一行啊！）
⑦强调结构中的被强调部分有时可放在句首。
For example:
Now was it that his life was done, and the fate which he could not escape was upon him.（就在这时，他的生命完结了，他所逃脱不了的命运降临了。）
⑧It is（was）之后可有一个以上的被强调部分。
For example:
It was she who was lying in the corridor and the stranger who bent over her. “Did I faint?” she asked.（是她躺在过道上，是那个陌生人在俯视她。“我晕倒了吗？”她问道。）
英语代词的用法总结表格
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。
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。
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。
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