高考英语专题-it句型总结.doc

IT句型总结一、        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：㈠ it 代指不定式短语的句型1. It takes + (sb.) + sometime / some money + to do sth.做某事花去某人多长时间        It took me three days to prepare for the examination. 我花了三天准备那次考试        It takes a lot of money to buy a house like that.        买那样一幢房子需要很多钱2.     It takes + 名词 + (for sb.) to do sth. 某人做某事需要… … 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3.     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, impossible, 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.懒汉谋生是越来越困难了4.     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It is our duty to pay taxes to our government. 向政府交税是我们的义务。

5.     It is + one’s turn + to do sth.  轮到某人做某事It is his turn to take the children to school.今天该轮到他送孩子们上学了6.     It is + up to sb. + to do sth.  做某事是某人的责任或义务It’s 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㈡ it 代指动名词短语的句型7.     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 nuisance, a waste of time, a great honour等It’s 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 was a nuisance having to wait for such a long time.要等这样久真烦人8.     It is + 形容词 + doing sth.  做某事真… …用于该句型的形容词有：pleasant, useless, senseless, worthwhile, dangerous等。

It was pleasant meeting you in London that day.那天在伦敦见到你真高兴㈢ it 代指名词性从句的句型9.     It + be + 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 common 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 no wonder that he has passed the examination.难怪他考试及格了It was a stupid thing that he didn’t listen to his teacher.他不听老师的话，真蠢。

10. It + be + 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, quite 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11. It + be + -ed 分词 + that从句 据… …是… …的常见的过去分词有：said, reported, 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 has been decided that…   大家决定It must be remembered that…务必记住的是It is said that he has gone to the USA for further study.据说他已去美国深造了It has been decided that we should design the machine ourselves.已经决定我们自己来设计这部机器12. It + 及物动词 + 名词 + 从句It makes no difference to me whether it’s foggy or clear.对我来说，天气有雾或晴朗没什么关系。

It doesn’t 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13. It + 不及物动词 + that分句常见的不及物动词有：seem, happen, look, appear, come about, 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 seems that he is sick. (= He seems to be sick.)看来他似乎有病It happened that he wasn’t there. (= He happened not to be there.)碰巧他不在哪儿14. It doesn’t matter (to sb.) + 从句 （对）… …都无所谓It doesn’t matter to me what he says.对我来说，他说什么都无所谓注意：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。

其句型为：　　　　 (1)suggestedIt is 　 (2)important　　　　that…+ (should) do　　　 　(3) a pity(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 (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㈠ it 代指不定式短语的句型15. 主语 + find(make, feel) it + 形容词 (+ for sb.) + to do sth.I find it easy enough to get on with Tom.我觉得与汤姆相处很容易。

16. 主语 + find(make, feel) it + 名词 + to do sth.He felt it his duty to mention the fact to Mr. Smith.他觉得把事实告诉史密斯先生是他的职责㈡ it 代指动名词短语的句型17. 主语 + think + it + 名词 + doing sth.We thought it no use doing that.我们认为做那件事是无用的18. 主语 + think + it + 形容词 + doing sth.   I don’t thi。