"It"的六种经典用法，你都清楚了吗

it的所有用法总结如下：

I．It 作形式主语的句型

①It + be + adj(kind , wise , careless, clever…) + of sb to do sth

Eg: It is wise of him to make such a decision他做出这样的决定是明智的。

②It + be + adj(easy , safe , common , normal …)+ for sb to do sth

该句型中adj若为important, necessary, natural, possible, strange, vital, essential等可改为从句,从句用should+动词原形。

Eg: It’s very dangerous for children to play with fire

It is important for us to learn English well (= It is important that we (should) learn English well)

③ It + be +V-ed(reported,believed, said, suggested…)+ that 从句

该句型中：⑴若V-ed为reported, believed, said等常译为“据报道”，“据认为”，“据说”。⑵若V-ed为suggested, ordered, demanded, insisted等表示“建议”,“命令”的词，从句要用虚拟语气(should)+动词原形。

Eg: It is suggested that the book (should) be revised

It’s said that Tom has been back from abroad (=Tom is said to have been back from abroad)

④ It + be + n (a pity, a shame, a fact , good news…)+ that 从句:

该句型中，从句一般用(should) + 动词原形，表示出乎意料，常译为＂竟然＂。

Eg: It 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！

⑤ It is useless/no use/no good /pleasure+ doing sth

此句型中的it是形式主语, 其后的动名词短语是真正的主语,译为“做…没有用”。

Eg : It ‘s useless arguing with him further // It’s no use talking with him, because he won’t listen

⑥ It takes sb to do sth

该句型中it是形式主语，真正的宾语是to do sth，常译为＂做……要花费某人……＂。

Eg: It took thousands of people many years to build the Great Wall

II．It 作形式宾语的句型

1sb find/ believe/ think/ feel/ consider/ make + it +n/adj +to do或从句

该句型中的it 作形式宾语。为了记忆方便我们可称该句型为“6123结构”。6 指主句中常用的动词：think, believe, make, find, consider, feel；1 指的是形式宾语 it；2 指的是宾补的两种形式：形容词或名词；3 指的是真正宾语的三种形式：不定式短语，动名词短语或that引导的宾语从句。

Eg: 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

2主语＋hate / dislike / love / like ＋it ＋when－从句

Eg: I hate it when people speak with their mouths full

3 主语＋appreciate ＋it ＋if－从句

Eg: I really appreciate it if you could help me with my math

4 sb depend on/count on/rely on/see to(负责，确保)/ answer for it that…

Eg: You may rely on it that he won’t be late

You must see to it that the doors are locked before you leave the lab

5 sb take it for granted that… 认为……是理所当然的

Eg: I take it for granted that he will succeed

IIIIt 引导的时间句型

⑴ It + is/has been+ 时间段+ since引导的时间状语从句:

该句型中从句一般用过去时态，句意为“自从以来已多久了”

Eg : It is 5 minutes since the bus left 公汽开走已有5分钟了

⑵ It + be（will/was）+ 时间段 + before引导的时间状语从句:

该句型中，主句谓语动词be若为肯定式，意为“过多久才”；若为否定式时，意为“没过多久就”。

Eg : It will be long/ 3 hours before he comes back要过三个小时他才会回来

It was 3 hours before he came back 过了三个小时他才回来

⑶ It + be + 时间点+ when引导的时间状语从句

这个句型中, it 代指时间，表示时间点的词前没有介词。

Eg : It will be Monday when he comes back 他周一的时候回来

It was Monday when he came back 他周一回来的

对比：It was on Monday that he came back (强调句)

⑷ It + is (about/high) time + (that) sb did/should dosth

意为“该是某人做…的时候了”， about/high是用于加强语气，that从句用should或动词一般过去时表虚拟。

亦可转换成 It + is+ time +(for sb )to do sth

Eg : It’s (high/about) time (that) we handed in/should hand in our homework

⑸ It / This / That +is+ the first(second …) time + that sb has done sth:

意为“这是某人第…次做…”，注意time前有序数词，主句是 is 时 ，从句要用现在完成时；如果主句用was ，则从句须用过去完成时。 Eg : It is the third time that I have seen the film

That was the second time that I have been there

IV．It 引导的强调句

强调句形式：It + is/was +被强调的部分+ that/who从句

Eg: It was last week that I met an old friend in the street // It was because he was ill that he didn't come to school yesterday

(强调原因状语从句时，只能强调由because所引导的从句)

判断方法：将It is/was和that去掉，若该句是一个完整无缺的句子即为强调句

常考考点：

①强调句型中的主谓一致Eg: It is you，rather than he，that are to blame for the accident．

②插入从句的强调句型 Eg: It was in the restaurant where we had dinner last Sunday that you left your wallet．

③强调句型的一般疑问句、特殊疑问句形式

一般疑问句：Is / Was it + 被强调部分+ that + 句子其余部分 Eg: Was it in 1933 that the Second World War broke out

特殊疑问句：疑问词+ be + it + that + 句子其余部分Eg: When was it that he changed his mind to take part in the activity？

④强调句型用于名词性从句, 尤其注意要使用陈述语序。

Eg: I don’t know when it was that he changed his mind to take part in the activity？

⑤not until用于强调句型 It is / was not until ＋被强调部分＋ that ＋其他部分

Eg : It was not until midnight that she went back home

此句型只用until，不用till。但如果不是强调句型，till和until可通用。因为句型中It is / was not已经是否定句了，that后面的从句要用肯定句。

V．It其他常见用法：

It looks / appears as if 看起来好像……It looks as if she is ill

It seems that 似乎…… It seems that he will be back in a few days

It turns out that 原来是…… It turned out that the beautiful woman was a thief

It occurs to/strikes sb that… 突然想到……It occurred to me that I hadn’t locked the door

It happened that 碰巧…… It happened that he met his teacher in the street

It doesn’t matter whether/if…无论是…没关系 It doesn’t matter whether he will come or not

It is no wonder that 难怪… He works so hard It’s no wonder he could pass the exam

How did it come about that … “……怎么发生的？” How did it come about that his bike was thrown into the river

It all depends/that all depends那得看情况

It's up to sb由……决定，由……负责，取决于……

as it is (1)事实上，实际情况是……; (2)照原样

make it成功、做到、说定

Believe it or not信不信由你

Get it 明白了

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q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

(1)it作无人称代词：it作无人称代词表示自然现象、气候、时间、距离等it是形式主语没有词汇意义如： 1)It is very cold today．(气候) 2)It is three o'clock．(时间) 3)It is along way from here．(距离)

(2)it作人称代词：it作人称代词时,用来代替上下文中提到的事或物,有时可代替整个句子的内容

(3)his(was)+形容词十不定式(to do),it为形式主语,不定式短语为真正主语 (过去分词)

(4)his+{形容词}+that(what,how,whether．．．),it为形式主语,that引导的为主语从句 (名词)

(5)It+不及物谓语动词+that引导的主语从句这些动词有：seem,appear,turn out,follow,happen等

(6)It may well be that引导的主语从句

(7)it作形式宾语： 1)某些及物动词+it+形容词十不定式； 2)某些及物动词+it+形容词+that 在上述两种句型中,it是形式宾语,真正的宾语是不定式短语,或that引导的宾语从句

(8)it用于强调句型： It is(was)十被强调的成分+that(which,who) 强调句型是简单句,可以用来强调句中主语、宾语和状语,但不能强调定语和谓语在这种句型中把his．．．that去掉,句子仍成立 代词在句中分析与翻译的

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