it的用法总结.doc

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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-dateit的用法总结it的用法总结it的用法总结:用法 英语中it的用法总结 it的用法总结高中 it的用法总结小学 篇一:it的用法归纳 ? Never be afraid of grammar ? Collect some examples; ? Watch them very carefully; ? Find out something in common; ? T

2、ry to use the rules - practise. it用法完全归纳 一、it 作人称代词的用法 1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如: I dropped my watch and it broke. 我把手表掉在地上摔坏了。 Its hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?” “Its in the bedroom. ” “狗在哪?”“在卧室里”。 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如: Is it a boy or a girl? 是

3、男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说 Its me。 3. 代替某些代词 代词 it 还可用于代替指示代词this, that 以及复合不定代词 something, anything, nothing等。如: “Whats this?” “Its a new machine. ” “这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1. 基本用法 it 作非人

4、称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如: Its too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2. 用于某些句型 Its time for sth. 该做某事了。 Its time to do sth. 该做某事的时候了。 Its time for sb to do sth. 某人该干某事了。 Its (about / high) time + that-从句. 某人该做某事了。(从

5、句谓语用过去式，有时也用“should+动词原形”) Its first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时) Its + 时间段 + since-从句. 自从有一段时间了。 Its + 时间段 + before-从句. 过多长的时间才 三、it用作形式主语 1. 基本用法 当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it。如: Its very important to remember this. 记住这一点很重要。 Its hard work climbing mou

6、ntains. 爬山是费劲的事。 Its unknown when he will come. 他什么时候来还不知道。 2. 用作形式主语的的重要句型 (1) It + be + adj. for (of) sb to do sth 某人做某事 It is hard for him to make up his mind. 他很难下定决心。 It was foolish of her to say such a thing. 她说那样的话，真是太蠢了。 【说明】介词 of 与 for 的区别是:of 用于指某人的性格、属性、特征等，介词for表示对象，意为“对来说” (from )。 (2)

7、It takes sb + 时间段 + to do sth. 某人做某事花了时间 It takes years to master a new language. 要花多年的时间才能掌握一门新的语言。 【说明】此句型可以有以下多变种变体:It took me an hour to write the letter. =The letter took me an hour (to write). =I took an hour to write the letter. 我写这封信花了一个小时。 (3) It is up to sb to do sth. 该由某人做某事 Its up to you

8、 to to make the choice. 得由你来作选择。 (4) it look (seem, appear, happen, occur) that as if? 似 乎 It seemed as though he didnt recognize me. 他似乎没认出我来。 It happened that I was out when he called. 他打电话时我碰巧不在家。 (5) If it were not for? / If it hadnt been for? 若不是因 为 If it were not for their help, we couldnt hav

9、e got over the difficulties. 要不是他们帮助，这些困难我们不克服不了的。 四、it用作形式宾语 1. 基本用法 当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时，通常会在宾语补足语前使用形式宾语，而将真正的宾语移至句末。其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。如: I find it difficult to do the job well. 我发现做好这件事不容 易。 I think it best that you should stay here. 我认为你最好住这 儿。 We think it no use compla

10、ining. 我们认为抱怨是没有用的。 2. 用作形式宾语的几个特殊结构 (1) 动词+ it + that-从句。如: I like it that you came. 你来了，我很高兴。 I take it (that) he will come on time. 我认为他会准时来的。 You can put it that it was arranged before. 你可以说这是以前安排的。 Rumor has it that the defence minister will soon resign. 据传 闻，国防部长不久就要辞职。 【说明】能用于此结构的动词不多，常见的有 ha

11、ve, take, put, like 等。 (2) 动词 + it + when (if)-从句。如: I dislike it when you whistle. 我不爱听你吹口哨。(from ) 篇二:It作形式宾语用法总结 It 做形式宾语用法总结 当不定式(短语)、动名词(短语)或从句在某个句子中作宾语时，为保持句子结构平衡，避免句式结构的混乱，常用it作形式宾语，而将真正的宾语放在句尾，构成“动词，it，宾语补足语，不定式(动名词或从句)”结构，也可称作“6123结构”。此时it仍只起先行引导作用，本身无词义。它可以代替三种形式:不定式、动名词和宾语从句。 it作形式宾语时，需具备

12、两个条件: ? ? 足语，具备了这两个条件，形式宾语it一定要用。 ? it代替不定式短语 think/ find/ feel/ consider/ make/ regard+ it +形容词/名词 + 不定式短语 如: ?I find it pleasant to work with him. (it 作形式宾语，代替不定式短语to work with him) ?They felt it difficult to finish the work in such a short time. ( it 作形式宾语，代替不定式短语to finish the work in such a shor

13、t time) ?She thinks it her duty to help us. ( it 作形式宾语，代替不定式短语to help us) ?I think it my honor to be invited to speak here. ( it 作形式宾语，代替不定式短语to be invited to speak here) ?Tom didnt find it difficult to write letters in Chinese. ( it 作形式宾语，代替不定式短语to write letters in Chinese) ?All these noises made i

14、t impossible for me to go on with the work. ( it 作形式宾语，代替不定式短语to go on with the work) ? it代替动名词短语( 这只限于少数句型，在多数情况下用不定式时更多一些) 如: ?The professor considers it no good reading without understanding. ?Do you consider it any good trying again? ?He found it useless( no use) arguing with him. ?He thought it

15、 absolutely senseless attempting the impossible. ?I dont think it worthwhile going to such a place. ? it代替宾语从句: 如: ?We all thought it a pity that the conference should have been cancelled. ?I took it for granted that they were not coming. ?Ill see to it that everything is ready in time. “it”的特殊用法常出现

16、在以下几种结构中。 A. 动词，it，when / if 从句。常见于appreciate, enjoy, like, dislike, love, hate, prefer等少数动词之后。 We would much appreciate it if you could do us that favour. I'd prefer it if I didn't have to finish the work. B. 动词+ it + that从句。常见于like, take, have, put等少数动词之后(it相当于that从句的同位语)。 I take it that t

17、hey will succeed sooner or later. The newspapers have it that some Japanese firms have gone bankrupt. Rumor has it that Mary is getting married. I take it that you have been out. Let me come and stay. You can put it that it was arranged before. C. 动词 + it + 介词短语 + that从句。常见于bring it to one's att

18、ention; owe it to sb; take it for granted 等结构中。 I owe it to you that I finished my work in time. Don't take it for granted that they will support you. D. 动词 + 介词(短语) + it + that从句。常见于answer for, depend on, rely on, insist on, look to, see to, stick to 等结构中。 I'll see to it that everything is

19、ready in time. You may depend on it that Tom will help you with your English. Im counting on it that you will come. E. 动词+ it +过去分词+从句。常见于几个可以带过去分词作宾语补足语的动词之后。 I heard it said that that factory was founded in 1995. They haven't made it known where the meeting is to take place. 易混用其他句型 英语中有一些句型不含

20、it, 但却易被误用了it，常见的有以下句型: ? There is something/nothing wrong/ the matter with sb./ sth. 如:There is nothing wrong /the matter with him. Hes just pretending. 他没什么事，他只是在装呢。 ? There is no doubt about对毫不怀疑 There is no doubt that对毫不怀疑 如:?There is no doubt about his suitability for the job. 毫无疑问，他适合这个工作。 ?Th

21、ere is no doubt about the fact. 关于这个事实毫无怀疑。 ?There is no doubt that he is hard to deal with. 毫无置疑他很难对付。 ? There is no need (for sb.) to do sth.没必要 如:?There was no need for him to remain in Paris. 他没有必要继续留在巴黎。 ?There is no need for you to start yet. 你现在还不必动身。 ? There is no/a possibility that 没可能/有可能

22、(= It is impossible/possible that ) 如:?There is a possibility that the train may be late. 可能火车要晚点。 ?There is no possibility that well see him this weekend. 我们本周末不可能见到他。 ? There is a chance that 可能 如:There is a chance that the sick child will get well. 这个生病的孩子可能会好起来的。 ? There be no/ some differences

23、betweenand和之间没/有区别 如:There are some differences between the two languages. 这两种语言之间有些区别。 ? After what seemed + 时间 如: After what seemed a very long time, the wounded soldier came back to life. 在经过似乎很长的一段时间之后，那个受伤的士兵苏醒了过来。 ? There be difficulty/ trouble (in) doing sth.干有困难 如:There was no difficulty in

24、finding him. 找到他没费什么事。 篇三:It用法小结 “It” 用法及其句型和固定搭配，是高中英语语法的重点、难点，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.(

25、for sb.)to do sth. 此处adj. 通常为描述事件的形容词:easy，difficult，hard，necessary，unnecessary，possible，impossible，likely，unlikely，right，wrong，important，unimportant，legal，illegal，well-mannered，ill-mannered，polite，impolite，clear，obvious，certain，suitable，proper，fit，useful，useless，dangerous 例 It is illegal(for a teen

26、ager)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，thoughtless，careful，careless，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/u

27、se 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

28、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 rudeness.(=It's of much importance that you should apologize to her for your rudeness.) (3)It verb sb. + clause= It is v-ing + clause It+surprise/delight/inter

29、est/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 ，wo

30、rk 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

31、 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. 三、It作主语的句型 1. It takes sb. to do(=sb takesto 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 wee

32、k 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 5. It is/has been since c

33、ontinuous 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: 例 It's the third time that he has failed the driving test. 1. verb+ it+ adj./noun(for/of)to do/clause (verb=think，believe，suppose，consider，feel，make，keep) -