“It”用法及其句型和固定搭配讲解由刀豆文库小编整理，希望给你工作、学习、生活带来方便，猜你可能喜欢“it的用法常用句型”。
“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，neceary，unneceary，poible，impoible，likely，unlikely，right，wrong，important，unimportant，legal，illegal，well-mannered，ill-mannered，polite，impolite，clear，obvious，certain，suitable，proper，fit，useful，usele，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，thoughtle，careful，carele，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„
It's（well）worth one's while doing/to do„
It's（well）worth while doing/ to do
例
It's no use crying over spilt milk.2.It替代作主语的从句常见句型
（1）It is + noun +从句
例
It is no secret that the president wants to have a second term at office.（2）It is adj.+clause
It's surprising that„（should）„
„„竟然„„
It's a pity/shame that„（should）„
„„竟然„„
例
It's important that you should apologize to her for your rudene.（=It's of much importance that you should apologize to her for your rudene.）
（3）It verb sb.+ clause= It is v-ing + clause
It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze
/bother/concern/frighten/please/anger sb.that„
例
It worried me that she drove so fast.（= It was worrying that she drove so fast.）
（4）It verb（to sb.）that„= sb/sth verb to do
（verb = appear，seem，come about，emerge，follow，chance，happen，occur，transpire，turn out，work out）
例
It（so）happened/chanced that they were out.（= They happened/chanced to be out.）
（5）It is v-ed that„=sb/sth is to do
（verb=say，report，think，believe，hope，expect，agree，accept，decide，determine，intend，plan，understand，know）
例
It is said that the couple have gotten divorced.（=The couple are said to have gotten divorced.）
（6）It is v-ed that „（should）„
（verb=demand，request，require，order，suggest，advise，recommend
例
It is suggested that they should begin with the third question.“It”用法及其句型和固定搭配讲解
2007-05-01 17:14:05.0中国高中生网(http://www.daodoc.com)
三、It作主语的句型
1.It takes sb.„ to do„（=sb takes„to do„）某人用多长时间做某事
例
It took the men a week to mend our roof.（= The men took a week to mend our roof.）
2.It's（just）（un）like sb.to do„（不）像某人做某事的风格
例
It was（just）like him to think of helping us.3.It's（about/high）time that„ should /v-ed„是该做某事的时候了
例
It's（about/high）time that we should take action.4.It's the x-th time（that）„ have v-ed„第几次做某事了
例
It's the third time that he has failed the driving test.5.It is/has been„ since „continuous v-ed（延续性动词）某动作已有多长时间不发生了
例
It's 10 years that he lived here 6.It was（not）„ before„过（不）了多长时间某动作发生了 例
It was not long before they arrived.四、It 作形式宾语
用来替代作宾语的从句、动词不定式、动名词，而把真正作宾语的从句、动词不定式、动名词置于句尾。
It 作形式宾语的常见句型：
1.verb+ it+ adj./noun（for/of）to do/clause（verb=think，believe，suppose，consider，feel，make，keep„）
例
I think it hard for you to do the task on your own./I think it hard that you'll do the task on your own.2.verb+it+adj./noun（one's）doing（adj.=usele/worth/worthwhile）（noun=no use/no good/worth one's while/a waste of time/money/energy/words）（verb=think，believe，suppose，consider，feel，make，keep„）
例
I'll make it worth your while telling me about his secret.3.verb+it+ important/unimportant/neceary/unneceary/natural/eential that „（should）„
verb+it+of much/great/no/little importance that„（should）„
（verb=think，believe，suppose，consider，feel，make，keep„）
例
I think it important that you（should）attendthe conference.4.verb + it+ as+ noun/adj.+ clause（verb=accept，regard，take，see，view）
例
The lecturer takes it as encouraging when so many students attend his lecture.5.v.+it + prep.+ that„
owe it to sb.that„把„归功于„
leave it to sb that„把„留给某人去做 take it for granted that „想当然 keep it in mind that„
例
Don't bother to arrange anything.Just leave it to me to sort out.6.It用在不能直接跟宾语从句的动词后面，尤其是表示好恶的动词后，enjoy，like，love，dislike，resent，hate，don't mind，be fond of，feel like，see to 宾语从句紧跟it之后
例
I hate it you can swim so well and I can't.7.It用在不能直接跟宾语从句的介词后面，宾语从句紧跟it之后（except that例外）
例
I'm for it that you will follow their advice.五、强调句型
It is/was+被强调部分+ that（who）„ 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who.在使用强调句型时需注意以下几点：
1.请注意强调句型的特殊疑问句
例
When was it that he changed his mind to take part in the activity？
2.在强调原因状语从句时，只能强调由because所引导的从句
例
It was because he was ill that he didn't come to school yesterday.3.在强调not „ until结构时必须把not与until一起放到被强调的位置上
例
It was not until she took off her dark glaes that I realized she was my brother.4.注意强调句型与定语从句的区别
例
It was at 7 o'clock that he came here yesterday.（强调句型）
It was 7 o'clock when he came here yesterday.（定语从句）
六、It 常用的固定搭配
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 busine.（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 gue the key to the problem is thechoice “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 form our teacher if we're late for cla 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。
