it的用法总结

1、 真诚为您提供优质参考资料，若有不当之处，请指正。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; ? Try 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? 是男孩还是

2、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 d

3、o 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 mountains. 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

4、) 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) 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 t

5、o 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 have 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 we

6、ll. 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 complaining. 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 have, 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

7、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 short

8、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 it 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

9、 consider it any good trying again? ?He found it useless( no use) arguing with him. ?He thought it 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 the

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