常用句型及考点IT

二、常用句型及考点 I. 形式主语型

1. It is clear (obvious,true,possible,certain…) that…

2. It is important (necessary,right,strange,natural…)that… 掌握本句型,应该记住所列举的形容词,并且记住that后的从句应用虚拟语气 (should+动词原形),should可以省去。

3. It is no good (use) doing sth. 4. It is a pity (a shame …) that…

本句型中,that后的从句一般用虚拟语气 (should十动词原形),should可以省去。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。

5. It is time (about time,high time) that… 本句型中that后的从句应该用虚拟语气。 6. It is the first (second…)time that…

7. It is said (reported,learned….)that… 8. It is suggested (ordered…) that…

本句型中的过去分词应该是表示请求、建议、命令等的词,that后的从句要用虚拟语气(should十动词原形),should可以省略。常译为“据建议;有命令……”。 9. It happens (seems,appears) that… 10. It takes sb…to do sth.

11. It doesn’t matter whether… 12. It is kind (of sb) to do sth. 本句型中的不定式如果需要逻辑主语,则须要前置介词of,而句型中的形容词必须是能表示逻辑主语特征的形容词,常见的有bad,brave,careless,clever,cruel,foolish,honest,horrible,kind,lazy,modest,naughty, polite,rude,silly, stupid,wise,wrong等。

13. It is necessary ( for sb) to do sth. 14. It is (just) like sb to do sth.

本句型为“某人(恰恰)是……样子”。用来表示赞扬或不满,若用否定式,则表示怀疑。

例:It's like him to leave the work to others. 他就是这样的一个人,把工作推给别人。 15. It is up to sb to do sth. 本句型表示“谊由某人做……”。 II.强调句型

It is+ 被强调部分+that/who… 本句型中被强调部分可以是主语、宾语或状语。强调的主语如果是人,that可以由who换用。 III.其他句型 1. It is…since…

本句型主句中用时间作表语,一般用现在时或完成时,since引导的从句常用瞬间动词的一般过去时态。主句如用一般过去时,则从句用过去完成时。 2. It is…when…

本句型中的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。 3. It looks (seems) as if...

本句型中的as if引导一个状语从句,常译为“看起来好像……”。如果与事实不相符合,则用虚拟语气. 例1 It looks as if he is ill (真的病了) .

例2 It looks as if he were ill (没有生病) .

,用作形式主语或形式宾语。

1. 当作主语的不定式、-ing短语或从句太长时,往往用it作形式主语,而将真正的主语移至句末,

以避免句子头重脚轻。it作形式主语的常见句型: ★it替代动词不定式作主语的常见句型为:

1) It is necessary /important /possible/easy…..for sb to do….

如:It is necessany to learn a foreign lanuage.学一门外语是有必要的。

It is kind /foolish/polite/brave/careless…of sb to do.常用形容词

有:clever/wise/bright/silly/foolish/stupid/kind/cruel/right/wrong等如:

It is kind of you to help me=You are kind to help me.:谢谢你帮助我.

3)It is up to sb to do sth.该由某人做某事如:It is up to you to decide.由你来决定.

4)It is (not)like sb to do sth.做某事是(不)是某人的行为.如:It was not like you to have said such rude words.

说出这样粗鲁的话不像你的行为.

5)It is one’s turn to do sth.轮到某人做某事.如;It is your turn to speak 轮到你发言了.

6) It takes time to do sth .如:It took me an hour to finish reading the novel.读完这本小说花了我一个小时 ★It替代动名词作主语的常见句型:

It’s no good/use doing… 如:It’s no use / good crying over spilt milk.覆水难收

It’s (well)worth (one’s )while doing/to dosth. It’s worth(your)while to learn english。学英语是值得的.

★It替代主语从句常见句型:

1) It is a pity (a shame ,a fact ,a wonder ,a good thing ,good news etc)that……例如:

It is a shame that he didn’t pass the exam. 很遗憾他没有通过考试。

2) It is strange(natural surprising obvious true good wonderful

possible,impossible,likely,unlikely,quite clear.certain ,etc) that… 。例如:

It was quite clear that they had no disire for peace. 很清楚他们没有和平的诚意。 3) It seems (happened ,turned out, occurred to sb etc.)that…例如:

It seemed that things were not as they expected. 看起来情况并不像他们所想象的那样。 4) It is said

(reported ,decided ,expected ,arranged ,rumoured ,etc)that …例如:

It is said that the tickets have been sold out . 据说票已售完。

5) It is time that 从句(谓语用过去时)

It is time that he went to school.他本该去上学了. 6)It seems/appears/sounds/looksas if…….似乎/听起来/看起来….

It seems as if it is going to rain.仿佛要下雨了. 2当复合宾语中的宾语是不定式、-ing短语或从句,往往

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