It”作形式主语和形式宾语用法详解

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it作形主的用法

it作形主的用法“It作形主的用法”是指使用it做形式主语，即在句子中无实际含义的主语，通常是一些动词、表语或状语从句。

it这个词有多种用法，因此它可以用来代替不同的句子成分。

在英语中，it作形主语最常用于三种情况：1、it作形式主语：在英语中，it常常被用作形式主语，以强调句子的其余部分。

例如：It is said that he is a very good student.It is believed that the earth is round.2、it作形式宾语：it也可以用作形式宾语，用来代替一个真正的宾语，强调句子的其余部分。

例如：She made it clear that she wouldn't go.He proved it wrong that he was not guilty.3、it作形式状语从句：it也可以用作形式状语从句，用来代替一个真正的状语从句，强调句子的其余部分。

例如：He said it as if he had known everything.He did it as though he had done it many times before.此外，it还有一种特殊的用法，即在句中作为虚拟语气的主语。

这种情况下，it用来引出一个虚拟条件句，带有一种意思是“如果……”。

例如：If it rains, we will stay at home.It would be nice if you could come to my party.以上就是“it作形主的用法”的详细说明。

从上文可以看出，it作形式主语、形式宾语和形式状语从句，并在句中作为虚拟语气的主语，是一种常见的用法。

只要我们能够正确地理解它的用法，就能够在日常的学习和交流中正确使用它。

It作形式主语和形式宾语用法详解

新希望英语语法精讲—“It”作形式主语和形式宾语“It”作形式主语和形式宾语的用法详解It作形式主语和形式宾语用法，是英语学习的主要语法项目之一。

无论是单项选择，还是完行填空，it 用法始终是反复考查的重、热点之一。

现将it在特殊句型中作形式主语和形式宾语用法，进行如下归纳分析，以供学习参考。

一、It用作形式主语当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。

此时it只起先行引导作用，本身无词义。

e.g. It is wrong to tell a lie.（说谎是错误的。

）［It 为to tell a lie 的形式主语〕It is no use arguing about it.（争吵是没用的。

）〔It 为arguing about it 的形式主语〕It is uncertain who will come.（谁要来还不确定。

）〔It 为who will come 的形式主语〕It作形式主语的常见句型：① It + be + 形容词+ to do sth. / doing /that ….e.g. It is very important to learn a foreign language. （学一门外语非常重要。

）It is useless crying over the spilt milk. （覆水难收。

）It was really surprising that she married a man like that.（她嫁给那样的男士真让人惊讶。

）②It + be +名词词组+ doing / that….e.g. It is no good telling lies. （撒谎没好处。

）It is a pity that you didn’t go to see the film yesterday. （你昨天没看成那部电影真遗憾。

高考语法it用法详解

一. it作人称代词在特定的环境中，it可指人，如指婴儿、性别不详或身份不明的人。

e.g.1. The baby stopped crying as soon as it saw the woman.（指婴儿）2. —Who is it?—It’s me.（性别不详或身份不明）二. it作形式主语或形式宾语it可以作形式主语或形式宾语而把真正的主语或宾语后置。

1. 用it作形式主语的情况：(1) It＋系动词＋形容词＋that从句It is necessary/important/surprising/strange＋that从句，从句中谓语动词常用“should＋动词原形”形式，且should可省略。

(2) It＋系动词＋名词＋that从句It is a pity/a shame/good news/a fact/an honour/a wonder/no wonder/our duty＋that从句。

e.g. It’s no wonder that you’ve achieved so much success.难怪你取得了如此大的成功。

(3) It＋不及物动词＋that从句It seems/happened/turned out /occurs/appears＋that从句。

e.g. It happened that he was out when I called on him.当我去拜访他的时候，碰巧他出去了。

(4) It＋系动词＋过去分词＋that从句It is said /reported/ announced/ believed/ thought/ well known/ hoped/ pointed out/ found out/ suggested/ ordered/ advised/ requested/ insisted/ required/ demanded＋that从句。

“It”作形式主语和形式宾语的用法详解

it作形式主语和形式宾语it既可作人称代词，用来表示动物或无生命的物体等，也可以作无人称代词，在句中作主语，表示“时间”、“距离”、“天气”等。

它还可以引导强调句，使语气得以加强。

此外，it在句中能作引导词，充当句子中的形式上的成分，如形式主语、形式宾语等。

㈠it作形式主语：it作形式主语时没有具体的意义，而只是帮助把真正的主语移到句子后部去，使句子显得平稳一些。

it作形式主语时，可以代替三种形式：不定式、动名词和主语从句。

1. it代替不定式短语常用于下列句型中：It + be +形容词+ (for/of sb.) to do sth.It + be + 名词+ to do sth.It takes sb. some time to do sth. 干…花了某人…时间It’s up to sb. to do sth. 干…是某人的职责或义务如：①It is everyone’s duty to obey the law.遵守法律是每个人的义务。

（it作形式主语, 代替不定式短语to obey the law）②It is difficult for a foreigner to learn Chinese.对于一个外国人来说，学习汉语是困难的。

（it作形式主语, 代替不定式短语to learn Chinese）③It is not right to use these places as rubbish dumps.把这些地方用来倒垃圾是不对的。

（it作形式主语, 代替不定式短语to use these places as rubbish dumps）④It took them a year to build the bridge.建这座桥花了他们一年的时间。

（it作形式主语, 代替不定式短语to build the bridge）⑤It is bad manners to stare at people.瞪着眼睛看人是不礼貌的。

it作形式主语或形式宾语的用法

it作形式主语或形式宾语的用法1. it用作形式主语当不定式、动名词、从句等用作主语时，为避免头重脚轻，通常在句首使用形式主语it，而把真正的主语放在句子末尾。

如：It’s a pity to refuse. 拒绝是令人遗憾的。

It’s no use saying any more about it.再谈这事没有用。

It’s not known where she went.她到哪里去了没人知道。

注：It is said / reported / believed / understood that…这类结构中的 it 也是形式主语。

如：It’s reported that two people were injured in the accident. 据报导这次事故中有两人受伤。

2. it用作形式宾语当不定式、动名词、从句等用作宾语且其后跟有宾语补足语时，就应在宾语补足语前使用形式宾语，而将真正的宾语移至句末。

如：I find it easy to get on with her. 我发现她很容易相处。

I think it best that you should stay here. 我认为你最好住这儿。

They haven’t made it known where they are to hold the conference. 他们还没宣布会议在哪里开。

几种特殊的形式宾语it1. enjoy, like, dislike, love, hate, prefer, appreciate等动词后接 if 从句或 when 从句，通常应先在动词后接 it 作形式宾语。

如：She won’t like it if you arrive late. 她不喜欢你迟到。

He hates it when people use his bike. 他讨厌别人用他的自行车。

I hate it if you say such things in public. 我讨厌你在大庭广众之下说那样的事。

it考点讲义：it用作形式主语和形式宾语的用法归纳总结- 高考英语语法二轮复习专题.docx

高中英语语法高考二轮复习it考点讲义【精讲版】it用作形式主语和形式宾语的用法归纳总结一、用作形式主语当不定式、动名词、从句等用作主语时，避免头重脚轻，通常在句首使用形式主语厄而把真正的主语放在句子末尾。

如：It is stupid to do such a thing.做这种事真蠢。

It's no good sitting up too late.熬夜没有好处。

It is necessary that he should be sent there at once.有必要马上派他到那里去。

注：类似以下句子中的il也可视为形式主语：It happened that the harvest was bad in 1988.碰巧1988 年的收成很不好。

It seems that she is afraid to tell them about it.似乎她怕将此事告诉他们。

二、用作形式宾语当不定式、动名词、从句等用作宾语且其后跟有宾语补足语时，就应在宾语补足语前使用形式宾语，而将真正的宾语移至句末。

如：I've made it a rule never to hurry,我已养成凡事从容不迫的习惯。

Do you think it possible to root out crime?你认为可以根除犯罪吗？He found il difficult to breathe at high altitudes.他觉得在高空呼吸困难。

注：通常意义的形式宾语主要见于真正宾语为不定式、动名词、从句等且其后跟有宾语补足语时的情形，即用于“动词+it+宾语补足语+真正的宾语”这样的结构，但以下两类形式宾语却比较特殊，其后没有宾语补足语:1.由于介词后通常不能直接跟that从句作宾语，有个别特殊结构就在介词后先接it作形式宾语，再跟that从句。

如：You may depend on it that it is true.你可以相信这是真的。

it的用法

“It” 用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点，因此在复习中应给予足够的重视。

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. (for sb.) to do sth.（2）It be adj. of sb. to do sth.（3）It替代作主语的动名词的常见句型：It’s no good/use doing…It’s (well)worth doing…It’s (well)worth one’s while doing/to do It’s (well)worth while doing/ to do2. It替代作主语的从句常见句型（1）It is + noun +从句（2）.It is adj. +clauseIt’s surprising that… (should)………竟然……It’s a pity/shame that…(should)………竟然…（3）It verb sb. + clause= It is v-ing + clauseIt+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/ please/anger sb. that…（4）It verb (to sb.) that…= sb/sth verb to do(verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work 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）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。

高考英语It的用法

高考英语It的用法It是高考英语中一个极其重要的词，其用法多样，在不同的语境中具有不同的意义。

下面我们将从it的用法、句型和固定搭配三个方面进行讲解。

一、it用作实词1、表示时间、天气、距离、温度等自然现象。

例如：It is Monday today.今天是星期一。

It is raining outside.外面正在下雨。

It is 5 kilometers away from here.距离这儿有5公里远。

2、表示观点、看法、态度等主观想法。

例如：I think it is a good idea.我认为这是一个好主意。

We think it is important to learn English well.我们认为学好英语很重要。

二、it用作形式主语当不定式、动名词或从句作主语时，为了保持句子结构平衡，避免头重脚轻，常用it作形式主语，代替不定式、动名词或从句，而把真正的主语放在句尾。

例如：It is important to learn English well.学好英语很重要。

It took me an hour to finish the homework.我花了一个小时完成作业。

三、it用作形式宾语当不定式、动名词或从句作宾语时，为了保持句子结构平衡，避免头重脚轻，常用it作形式宾语，代替不定式、动名词或从句，而把真正的宾语放在句尾。

例如：I think it is important to learn English well.我认为学好英语很重要。

He found it hard to learn English well.他发现学好英语很难。

四、it用于强调句型中强调句型是英语中一个重要的句型，用于突出强调某个成分，特别是主语、宾语和状语等。

在强调句型中，it没有实际意义，只是起到引导作用。

例如：It is I who am the best student in my class.我是班里最好的学生。

高中英语课件-it作形式主语及形式宾语句型

like/dislike/love/enjoy/hate/appreciate +it when…
I would appreciate +it +if… 注意：表好恶的动词不能直接接宾语从句，
需要在从句前加上形式宾语it。
ห้องสมุดไป่ตู้
it的固定用法
When it comes to.... 当谈到…；
take it for granted that... 认为…理所当然
It is a fact(a pity, a shame, an honour，no wonder) +that从句注：It is no good (use ) doing sth.(动名词短语做真正主语)
做某事是没益处(没有用的)的
注：区分常见的there be固定句型
There is no doubt that 毫无疑问 There is no need to do 没有必要 There is no point doing sth 做某事无意义
depend on it that...某人相信...
see to it that... 务必，保证
Let it be/go.
顺其自然；
That’s it. Make it. Get it.
对了，正是；成功了；懂了
一. it 用作形式主语 (1) It is+ adj. + that从句/to do sth
① It is clear, obvious,true,possible,certain.... that .....
“....是清楚（显然，真的，肯定）的” ② It is necessary, important, strange, natural.... that .....

it用法

“It”用法及其句型和固定搭配讲解一、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. (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 teenager) 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/use 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./n +clauseIt'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 + clauseIt+surprise/delight/interest/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 is done 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 have gotten divorced.)(5) It is done 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 takes…to 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 week to mend our roof.)2. 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.3. It's the x-th time (that) …have v-ed…第几次做某事了例It's the third time that he has failed the driving test.4. It is/has been…since …continuous 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 here6. 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It 作形式宾语的常见句型：1. verb+ it+ adj./noun (for/of) to do/clause (verb=think, believe, suppose, consider, feel, make, keep…)例I think it hard for you to do the task on your own./I think it hard that you'll do the task on your own.2. v. +it + prep. + that…owe it to sb. that…把…归功于…leave it to sb that…把…留给某人去做take it for granted that …想当然keep it i n mind that…例Don't bother to arrange anything. Just leave it to me to sort out.3. It用在不能直接跟宾语从句的动词后面，尤其是表示好恶的动词后，enjoy, like, love, dislike, resent, hate, don't mind, be fond of, feel like, see to 宾语从句紧跟it之后例I hate it you can swim so well and I can't.五、强调句型It is/was+被强调部分+ that(who)…强调句型用来强调谓语动词以外的任何句子成分。

“It”作形式主语和形式宾语的用法详解

it作形式主语和形式宾语一、it作形式主语：当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。

此时it只起先行引导作用，本身无词义。

it作形式主语时，可以代替三种形式：不定式、动名词和主语从句。

1. it代替不定式短语常用于下列句型中：如：It is everyone’s duty to obey the law.遵守法律是每个人的义务。

It is difficult for a foreigner to learn Chinese.对于一个外国人来说，学习汉语是困难的。

It took them a year to build the bridge.建这座桥花了他们一年的时间。

It is bad manners to stare at people.瞪着眼睛看人是不礼貌的。

It is up to us to help those in need.帮助那些有困难的人是我们的责任。

eg. It’s important for us to learn English well.学好英语对我们来说是重要的。

It’s kind of you to help me.感谢你对我的帮助。

⒉ it代替动名词短语：It’s no good/use/useless/a waste of time doing sth.做某事没有用/浪费时间①It is no good/ use having a car if you can’t drive.如果你不会开车，有车也没用。

②It is a waste of time watching TV.看电视是浪费时间。

（it作形式主语,代替动名词短语watching TV）⒊ it代替主语从句：这个主语从句可以用连词that引导，也可以用连接代词或连接副词引导。

如：①It was clear that they had no desire for peace.很清楚他们没有和平的诚意。

“It”用法及其句型和固定搭配讲解

“It”用法及其句型和固定搭配讲解“It”用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，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。

（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 teenager)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/use 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。

形式主语与形式宾语

i t作形式主语和形式宾语的用法it作形式主语和形式宾语的用法It除了用作代词表示指代意义以外，还可以用作形式主语和形式宾语。

这种用法是中学阶段英语学习的主要语法项目之一。

纵观历届中考题，无论是单项选择、完型填空，还是句型转换或翻译，it用法始终是反复考查的重、热点之一。

现将it在特殊句型中作形式主语和形式宾语用法，进行如下归纳分析，以供读者学习和参考。

一、It 用作形式主语1．当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。

此时it只起先行引导作用，本身无词义。

例如：It is wrong to tell a lie. 说谎是错误的。

It is no use arguing about it. 争吵是没用的。

It is uncertain who will come. 谁要来还不确定。

2．It 作形式主语的常见句型① It + be + 形容词+ to do sth. / doing / that ….。

例如：It is very important to learn a foreign language. 学一门外语非常重要。

It is useless crying over the spilt milk. 覆水难收。

It was really surprising that she married a man like that.她嫁给那样的男士真让人惊讶。

② It + be +名词词组+ doing / that ….，例如：It is no good telling lies. 撒谎没好处。

It is a pity that you didn’t go to see the film yesterday. 你昨天没看成那部电影真遗憾。

It is a truth that there would be no new China without the Communist Party.没有共产党就没有新中国，这是毋庸质疑的。

It作形式主语和形式宾语

It作形式主语和形式宾语，虽然是我们高中就学过的语法点，但在考研英语题型中，无论是在阅读还是翻译，常会考查该知识点。

一、it作形式主语。

英语中不定式、动名词、主语从句在作主语时主语往往显得很长，使整个句子看上去有点头重脚轻，这样就借助“it”来作形式上的主语，而把真正的主语移到句子后边去，使全句结构上前后平衡。

“it”并无实际意义。

It之后的谓语部分，可以是be+形容词，be+名词（词组），或be+过去分词等。

1．不定式做真正主语例句1：If you are part of the group which you are addressing, you will be in a position to know the experiences and problems which are common to all of you and it’ll be appropriate for you to make a passing remark about the inedible canteen food or the chairman’s notorious bad taste in ties. (2002 Text1)【结构分析】本句包含由and连接两个并列分句。

第一个分句主干为you will be in a position，不定式to know the experiences and problems 做定语，修饰position，其中which引导定语从句，修饰the experiences and problems。

第二个分句为it’ll be appropriate for you to …，其中it作形式主语，真正的主语为不定式to make a passing remark about…。

【参考译文】如果你是你谈话听众中的一员，你就能够了解你们所共有的经历和问题，而且你也可对餐厅极难吃的食物或者领导在选择领带方面差劲的品味进行评头论足。

专题五：It作形式主语和形式宾语的用法

专题五：It作形式主语和形式宾语的用法一、It用作形式主语当从句、不定式、动名词等用作主语时，为避免头重脚轻，通常在句首使用形式主语it，而把真正的主语放在句子末尾。

1. 指代主语从句。

It is possible that he has stolen the car. 很可能他偷了小车。

It is strange that he should not have passed the test. 他测试没有通过真奇怪。

It is uncertain whether/if he will leave for Beijing tomorrow. 明天他是否去北京还不敢肯定。

2. 指代不定式（短语）作主语。

It is a pity to refuse. 拒绝是令人遗憾的。

It was his duty to attend to the matter. 处理这件事是他的责任。

It is impossible to finish the work on time. 准时完成工作是不可能的。

3. 指代动名词。

It is no good staying up too late. 熬夜是没有好处的。

It is no use saying anything more about it. 再说这件事没用。

It is useless crying over the spilt milk. 覆水难收。

It is a waste of time arguing with him. 与他争论简直是浪费时间。

It is a pleasure talking with you. 与你交谈真是件快乐的事情。

4. It用作形式主语的常用句型。

①It+is/was+形容词+to do sth./that…常见的形容词有known, clear, necessary, likely, unlikely, right, wrong, important, certain, obvious, strange, natural, kind, nice等。

It的用法及句型总结

It的用法及句型总结"It" 用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，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，如前文中的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. (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 teenager) 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/use doing…It's (well)worth doing…It's (well)worth on e's while doing/to do…It's (well)worth while doing/ to do例: It's no use crying over spilt milk（覆水难收）.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. +clauseIt'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 + clauseIt+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze /bother/conc ern/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 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 takes…to 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 week 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…第几次做某事了例: It's the third time that he has failed the driving test.5. It is/has been… since …continuous v-ed(延续性动词) 某动作持续了多长时间例: It's 10 years since he lived here6. 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。

英语it的用法

英语it的用法摘要本文主要介绍了英语中it的五种常见用法，分别是：作为代词，指代前面提到过的人或事物作为形式主语，代替由不定式、动名词或从句所表示的真正主语作为形式宾语，代替由不定式、动名词或从句所表示的真正宾语作为虚拟主语，没有实际意义，只是在句中起到填补主语位置的作用用于构成强调句型，强调句子中的某一部分本文通过举例和对比，解释了每种用法的特点和规则，并给出了一些注意事项和练习题。

希望本文能够帮助你掌握英语it的用法，并提高你的英语水平。

一、it作为代词it作为代词，可以指代前面提到过的人或事物，或者语境中明确的人或事物。

它通常用来指非生命的东西，如物体、动物、植物、天气、时间等。

它有主格和宾格两种形式，都是it。

例如：I like this book. It is very interesting.（我喜欢这本书。

它很有趣。

）Look at that cat. It is so cute.（看那只猫。

它太可爱了。

）It is raining outside.（外面下雨了。

）It is nine o'clock now.（现在九点了。

）有时候，it也可以指代一个人，特别是当这个人的性别不确定或不重要时。

例如：Who is it? It is me.（是谁？是我。

）Someone called you, but it was a wrong number.（有人给你打电话了，但是打错了号码。

）二、it作为形式主语在英语中，有些句子的真正主语是由不定式、动名词或从句所表示的，例如：To learn English well is important.（学好英语很重要。

）Swimming is good for your health.（游泳对你的健康有好处。

）That he is honest is obvious.（他很诚实是显而易见的。

）这些句子虽然正确，但是看起来很笨拙，因为主语太长，而且不容易区分出谓语和补语。

英语中it的用法

it 在英语中的意思较多,用法较广,现总结如下;一、it作句子的真正主语1．it 指前面已经提到过的人或事物,有时指心目中的或成为问题的人或事物,作真正主语;例如：What’s this －It is a sheep这是什么这是一只绵羊;Who is it －It’s me I. 谁是我;It’s the wind shaking the window. 是风刮得窗户响;2．it指时间、季节;一般用在无人称动词的主语;例如：What time is it －It’s nine. 几点了九点了;It’s time for the meeting. Let’s go. 开会的时间到了,我们走吧;What day is today －It’s Saturday. 今天星期几今天星期六;What’s the date today －It is October 1st.今天是几号今天是十月一日;What season is it －It is summer. 现在是什么季节是夏季;3．it 指气候;一般作无人称动词的主语;例如：Is it cold in this room －No, it isn’t. 屋里冷吗不冷;What’s the weather like today －It is fine.今天天气怎么样是晴天;It often rains in summer and it often snows in winter in this city.这个城市夏天经常下雨,冬天经常下雪;4．it指距离、情况等;一般用作无人称动词的主语;例如：It is five kilometers from my home to the school.从我家到学校有五公里;It is very near from this factory to that one.从这个工厂到那个工厂非常近;It is a long way to the sea. 离海很远;Is it well with you 你身体好吗二、it作形式主语动词不定式、动名词短语起、从句在句子中起主语作用,而这一部分用词较多时,可以用it作为形式主语,放在句首代表其后所说的事实上的、真正的主语,而把真正的主语放在后面;1．It +谓语＋动词不定式;It 作形式主语,动词不定式作真正的主语;例如：It is difficult to climb a mountain. 爬山是很艰难的;It’s a good habit to do morning exercises. 作早操是个好习惯;It’s important to do proper memory work in the study of a foreign language. 在学习外语时适当地做一些有助于记忆的练习是很重要的;It is right to do so. 这样做是对的;2．It＋谓语＋动名词短语;It 作形式主语,动名词短语作真正的主语;例如：It is dangerous playing with fire. 玩火是危险的;It is no use learning without thinking. 学而不思则罔;It’s useless arguing with a silly boy. 和笨孩子争论是没有用的;3．It ＋谓语＋名词性从句;It 作形式主语,以that 引导的名词性从句是真正的主语;例如：It is a pity that you didn’t see such a good film.你没看这么好的电影,真可惜;It is certain that we shall succeed. 我们一定会成功;It is strange that nobody knows where he lives.真奇怪,谁也不知道他住在哪里;It is strange that…后面可用虚拟语气;如：It is strange that he should have made such a mistake.他居然犯了这样一个错误,真奇怪;It is strange that nobody should know where he lives.居然没有人知道他住在哪里,真奇怪;It is said that the plane will take off at ten tomorrow morning.据说飞机明天上午十点起飞;三、it作形式宾语it 作形式宾语,代表其后所说的真正的宾语;真正的宾语是以that 引导的名词性从句或不定式短语;例如：I consider it wrong that you Chinese students learn English without comparing it with your own language.我认为你们中国学生学习英语,不和你们自己的语言比较是不对的;I find it not so difficult to learn a foreign language.我发现学习一门外语不那么困难;I remember I made it clear to you that I was not coming.我记得向你明确表示过我不来;They want to make it clear to the public that they are doing an important and necessary job.他们要向公众表明,他们在做一件重要而又必要的工作;四、it 用于强调结构在表示强调的结构中,it 可用作先行代词,这种结构的句型如下：It +is/was +被强调的部分＋that +其他部分;如果强调的部分是人,可用who, whom 代替that.例如：Professor Wang teaches us English every Monday afternoon.王教授每星期一下午教我们英语;强调主语：It is Professor Wang who teaches us English every Monday afternoon.强调间接宾语：It is us whom Prof. Wang teaches English every Monday afternoon. 强调直接宾语：It is English that Prof. Wang teaches us every Monday afternoon.强调状语：It is every Monday afternoon that Prof. Wang teaches us English.It was here that I first met him. 这就是我初次与他见面的地方;强调状语It is the people who are realy powerful.翻译练习1该上课了,快;It is time for class. Hurry up.2从这儿到你们学校远吗不远,大约一公里;Is it far from here to your school No, it isn’t. It’s about a kilometer.3从我家到颐和园去很近;It is very near from my home to the Summer Palace.4天正在下雨;It’s raining now.5电灯是爱迪生发明的;It was Edison who invented the electric light.6我认为学习一门外语是很重要的;I think it important to learn a foreign language.7他通常一天读两次英语;He made it a rule to read English twice a day.8从我家去天安门广场坐公共汽车大约要一个小时;It takes about an hour to go from my home to the Tian’anmen Square by bus.反意疑问句反意疑问句相当于“对不对”“好不好”“行不行”,用yes或 no 回答;由两部分组成,前一部分是陈述句,后一部分是附加疑问短语,中间用逗号隔开,所以反意疑问句又叫附加疑问句;通常的形式是：肯定的陈述句＋否定的附加疑问,或否定的陈述句＋肯定的附加疑问;如：He studies English, doesn’t heHe doesn’t study English, does heThey are from America, aren’t theyThey are not from America, are they反意疑问句的主要形式：1．如果主句是be或其他助动词如can, shall, will 等,其反意疑问句用同一助动词; 如：We are late, aren’t weYou haven’t met my wife, have youHe can drive a car, can’t heThey used to have difficulty in just making ends meet, didn’t usedn’t theyYou’d better eat with knives and forks, hadn’t you2．如果主语带有seldom, hardly, never, rarely, few, little等否定词或半否定词时,因为主句本身具有否定意义,附加疑问部分的动词用肯定式,如：We seldom go to the cinema, do weSue almost never worked, did she3．如果主句部分是“I am…”结构,由于”am not” 没有相应的缩略形式,附加疑问部分一般用aren’t I 代替;如：I am your friend, aren’t II’m late, aren’t II am a student, aren’t I在祈使句中的附加疑问部分一般用will you, won’t you.4. 在祈使句中的附加疑问部分一般用will you, won’t you.如：Sit down, will youHave some tea, won’t youOpen the window, won’t you这种句子可以理解为: Will you do something如:Will you open the window注意：否定的祈使句之后,只能用will.Don’t forget, will youDon’t make so much noise, will you5．以Let’s… 开头的祈使句,肯定的用shall we否定的用all right或OK,如：Let’s go back to our seats, shall weLet’s not have hot food this t ime, OK all right这种句子可以理解为：Shall we do something,如:Shall we go back to our seats.这样有助于理解和记忆;注意：Let’s 与Let us 的区别：Let’s包括听话人在内,应用shall we, 而Let us 不包括听话人在内,表示“请你让我们…”,要用will you.如：Let’s watch the news on TV, shall we 表示建议Let us watch the news on TV, will you 表示请求6．主句是I suppose, I think, I believe等时,附加疑问部分则往往与that 从句中的主语和谓语动词保持对应关系,但要注意否定的转移;如：I suppose that you know the meaning of the word, don’t you这句话明显是要问“你是不是知道”而不是问“我是不是这样认为”I don’t think that you have read the book, have you7．当主句的动词have 表示“拥有”时,附加疑问既可用have, 也可用do,如：You have a color TV set, haven’t you/don’t you当主句的have不表示“拥有”而表示其他意思时,附加疑问要用do,如：You had a cold yesterday, didn’t youThey don’t have coffee with breakfast, do theybe句型的反意疑问句,用there 作主语;如：There is something wrong, isn’t thereThere won’t be any trouble, will there 不会有任何麻烦,是吗9.陈述部分的主语是everyone, someone, anyone, no one, nobody等不定代词时,其疑问部分的主语可用he, 也可用they.Everyone knows it, doesn’t he/don’t they英语反意疑问句的回答有点和汉语的相反;但一定要记住：只要回答是肯定的,都用yes,只要回答是否定的,都用no;这在主句是否定句的时候要特别注意;例如：Mr. Jones can’t speak French, can he No, he can’t.琼斯先生不会讲法语,对吗对,他不会讲法语;Mr. Jones can’t speak French, can he Yes, he can.琼斯先生不会讲法语,对吗不,他会讲法语;This is not a door, is it －Yes, it is. It is an iron door.这不是门,对吗不,这是门;是扇铁门;。