代词it句型总汇

1、7. It构成的句型小结一、It作形式主语的句型：为使句子平衡，往往把it置于句首作形式主语，而把真正的主语（通常是不定式短语、动名词短语或主语从句）移至句末。It 作形式主语的句型有：1. It takes + (sb.) + sometime / some money + to do sth.做某事花去某人多长时间Just a minute, it wont take me long to change. 等一下,我很快就可以换好衣服。It took me three days to prepare for the examination. 我花了三天准备那次考试。It takes a l

2、ot of money to buy a house like that. 买那样一幢房子需要很多钱。It took great imagination as well as patience for Annie to teach me to speak.对安妮来说，教我说话需要极大的信心和想象力。2. It is +形容词+ (for / of sb.) to do sth. 某人做某事是 的常用于该句型的形容词比较多。for sb. 的句型 常用于表示事物的特征特点，表示客观形式的形容词，如easy, difficult, hard, important, possible, imposs

3、ible, comfortable, necessary, better等。of sb的句型一般用表示人物的性格，品德，表示主观感情或态度的形容词，如kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的) 等。It was kind of you to help us. 谢谢你对我们的帮助。It is getting harder every day for a lazy man to get a living.懒汉谋生是

4、越来越困难了。What time would it be most convenient for me to call again?什么时候我再给你打电话最合适？Its very thoughtful and kind of you to offer me this lovely holiday.你能给我这么美好的假日，实在是想得太周到、友善了。3. It is +名词+ to do sth. 做某事是 的常用于该句型的名词有：manners, duty, fun, good, a great honour等。As a student, it is bad manners to come la

5、te to class.作为学生，上课迟到是没有礼貌的。It is our duty to pay taxes to our government.向政府交税是我们的义务。It is his turn to take the children to school.今天该轮到他送孩子们上学了。4. It is + up to sb. + to do sth. 做某事是某人的责任或义务Its up to us to give them all the help we can.我们理应竭尽所能地给予他们帮助。Its up to you to decide whether to go or not.应

6、该由你决定是否去。5. It is +名词+ doing sth. 做某事是 用于该句型的名词有：no good, no use, hard work, a waste of time, a great honour等。用于该句型的形容词有：pleasant, useless, senseless, worthwhile, dangerous等。Its no use/good (in) crying over spilt/spilled milk.事已至此，后悔也无用。（牛奶已泼，哭也没用。）It is hard work keeping the grass green at this tim

7、e of year.这个季节还使草保持绿色真是不容易。Its a waste of time your talking to him.你和他谈话是浪费时间。Its dangerous playing with fire.玩火是危险的。Is it worthwhile making such an experiment?做这样的实验值得吗？6. It is +名词+ that从句用于该句型中的名词有：a pity, a shame, a fact, an honour, a wonder, a good thing, good news, no wonder等。惯用句型有：It is commo

8、n knowledge that 是常识It is a surprise that 令人惊奇的是It is a fact that 事实是It is no wonder that 难怪 It is a pity that she has made such a mistake.真遗憾，她犯了这样一个错误。It is a thousand pity/ thousand pities that he missed the chance.他错过了这次机会真是太可惜了。It is no wonder that he has passed the examination. 难怪他考试及格了。It is

9、a shame that you have to leave so soon. 你必须这么早离开，真遗憾。It is a great honour that he receive that prize.他得到了那个奖真是无上的荣耀。7. It is +形容词+ that从句 是 用于该句型中的形容词有：clear, obvious, true, certain, important, strange, natural, surprising, fortunate, good, wonderful, funny, possible, impossible, likely, unlikely, q

10、uite clear, unusual等。惯用句型有：It is necessary that 有必要It is important that 重要的是It is obvious that 很明显It is important that we (should) learn English well.我们学好英语是非常重要的。It is necessary that the students (should) remember all the new words.学生记住所有的新单词是必要的。8. It is + -ed分词+ that从句 据 是 的常见的过去分词有：said, reporte

11、d, learned, announced, known, decided, expected, believed, considered, declared, felt, hoped, seen, supposed, thought, understood等。惯用句型有：It is said that 据说It is reported that 据报道It is believed that 大家相信It is hoped that 大家希望It is well known that 众所周知It is thought that 大家认为It is suggested that 据建议It h

12、as been decided that 大家决定It must be remembered that务必记住的是It is reported that another man-made satellite has been put into orbit.据报道，又有一颗人造卫星被送入轨道。It is said that he has gone to the USA for further study. 据说他已去美国深造了。It is known to all that light travels in straight lines. 众所周知，光以直线运行。It has been deci

13、ded that we should design the machine ourselves.已经决定我们自己来设计这部机器。9. It +及物动词+名词+从句It makes no difference to me whether its foggy or clear.对我来说，天气有雾或晴朗没什么关系。It doesnt make any difference to me whether he goes or not.不管他是否去对我都没有什么影响。10. It +不及物动词+ that分句常见的不及物动词有：seem, happen, look, appear, come about,

14、 turn out, occur等。惯用句型有：It appears that似乎 It (so) happens (that)（那么）碰巧It occurred to me that 我突然想起It happened that he wasnt there. (= He happened not to be there.)碰巧他不在哪儿。It doesnt matter to me what he says.对我来说，他说什么都无所谓。It doesnt seem to matter much whether he received the gift or not.他是否接受这件礼物似乎都无

15、所谓。注意：It is demanded / necessary / a pity + that结构中的主语从句的谓语动词要用should 加动词原形， should 可省略。 (1) suggested, ordered, proposed, required, demanded, requested, insisted + (should) do(2) important, necessary, natural, strange + (should) do(3) a pity, a shame, no wonder + (should) doIt is suggested that we

16、(should) hold a meeting next week.It is necessary that he (should) come to our meeting tomorrow.二、It 作形式宾语的句型1. sb 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

17、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

18、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 wont be late. You must see to it that the doors are locked before you leave the lab.5. sb. take it for

19、granted that 认为是理所当然的 Eg: I take it for granted that he will succeed.三、It 引导的时间句型1 It is+ 时间段 + since引导的时间状语从句: （从句用过去时）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2 It was/will be + 时间段 + before引导的时间状语从句: （主从句时态一致）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

20、: It will be 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3 It was / will be + 时间点 + when引导的时间状语从句 （it等于时间，时间前无介词）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

21、 he came back . (强调句)4 It + is (about/high) time +(that) sb did/should do sth 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 : Its (high/about) time (that) we handed in/should hand in our homework.5 It / This / That +is+ the first(second ) time +

22、 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.四、 It 引导的强调句: 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 didnt come to school yesterday.