“It”用法及句型讲解与习题汇总
It的用法讲解与练习题
It的用法讲解与练习题It的用法（专项总结）一、人称代词1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复:①They watched the train until it disappeared in the distance.2.，也可以指动物或婴儿(未知性别的婴儿或孩子):②Is this your dog？No, it isn’t.③They got a baby and it was a ten-pounder3.，也可指抽象事物或指抽象环境和情景:③I hate it when people talk with a full mouth.．二、.非人称代词1.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等：⑴.指天气：It is a lovely day, isn’t it? ⑵.指时间: It was nearly midnight when she came back.⑶.指日期:I t is April First today. ⑷.指距离:It is some 3000 kilometers from A toB.⑸.指价值:It is three dollars. ⑹.指温度:Today it is 30 degrees centigrade.三、其他用法1.在句子的主语不太明确时充当主语，表示谁在做某事：①Who is it there? It's I (me/you/he.....). ②I thought it was Mary, but it was not she.③Her face lighted when she saw who it was.2.泛泛的指某件事： (有时泛指一般情况)①It doesn’t matter. ②It is a shame, isn’t it? ③How is it going?(情况怎样)④It says in the newspaper that......3.it用在一些词组中，it 没有特别的意思The last train's gone. Come on, we'll foot it.(来，咱们步行吧。
It用法小结及练习
It用法小结及练习一．作代词（指天气、温度、时间、距离等或代替前文提到过的事物。
）1. 今天天气晴朗。
2. 今天是星期二。
3. 学校到我家10分钟的步行路程。
4.我有一本字典，它使我聪明。
5 我没有字典，你能借我一本吗？二. 作形式主语1.Playing computer games all day long is a waste of time.=It is a waste of time playing computer games all day long.2.To learn English well is important for us.=It is important for us to learn English well.3. That we students should be kind to others is necessary.=It is necessary that we students should be kind to others.总结：it还常用于以下句型中It is strange/ important/necessary t hat…(should) do…It is no use /no good /a waste of time doing sth.It is/was thought （believed，said，reported）that sb / sth do/ have done…= sb/sth is/was said to do/ have done…Exercises1:1).对我们来说学一门外语是必要的。
2).经常帮助同学她真是太好了。
3).据说杰克已经通过了考试。
Exercises2:1). Aids is said __ the biggest health challenge to both men and women in that area in the past few years.A. that it isB. to beC. that it has beenD. to have beenIt is said that Aids has been the biggest health challenge to both men and women in that area in the past few years.2).The flu is believed _______ by viruses(病毒)that like to reproduce in the cells inside the human nose and throat.A. causingB. being causedC. to be causedD. to have caused3). ---Is Bob still performing?---No. He is said __ the stage already as he has become an official.A. to have leftB. to leaveC. to have been leftD. to be left句型总结：It is said that Aids has been the biggest health challenge t o…It is believed that the flu is caused by viruses that---It is said that he has left the stage already ---三．it 作形式宾语，常用句型如下：(think, feel, make, find, believe, consider…) + it + adj./ n. to do/ doing / that…1)He feels it his duty to help others.2)We found it impossible to finish the work in a day.3)We thought it no good working all the time.4)He made it clear that we shouldn’t break the school rules.Exercises1.她发现用英语回答这问题很难。
it的用法讲解及练习
“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) worthwhile 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. +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 verb (to sb.) that…= sb/sth verb to do(verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work 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 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。
[精]超详细的It的用法归纳总结(附习题及答案)
![[精]超详细的It的用法归纳总结(附习题及答案)](https://img.taocdn.com/s3/m/745e6e9b0b4e767f5acfcea4.png)
超详细的It的用法归纳总结（附习题及答案）一、It是代词指除人以外的一切生物和事物，用来指代时间、季节、天气距离、环境。
在这里，i是一个虚词，没有任何实际意义。
例如:①It is a quarter to eight now.现在是八点差一刻。
②It is midnight. 现在是午夜。
③It is time for breakfast.现在是吃早饭的时间。
④-What is the date today?今天几月几号?--It is December 3rd. 十二月三号。
⑤--What season is it?现在是什么季节?--It is summer. 夏季。
⑥--What is the weather like today?今天天气如何?--It is fine.天气很好。
--It is foggy and wet.天气多雾又潮湿。
⑧How far is it from the bus station to your home? 从汽车站到你们家有多远?⑨It is around five miles to the shopping center.从这儿到购物中心大约有五英里。
二、It用作主语用来指代文中出现过的人或事。
it此时可用来代替一个名词，一个短语，一个从句或一个句子。
在句中可指生物,非生物，不明性别的人，也可以指一个动作或件事情(人物型)，还可以指人或事物的身份(指示型)。
在这里,it是有实际意义的。
例如:①--What is this?这是什么?--It is a computer.这是一台计算机。
②--What is that?那是什么?--It is a map.那是一张地图。
③--Where is the dog?狗在哪儿?--It is lying under the tree.它在树下面躺着呢。
④--Where is the post office?邮局在哪儿?--It is near the hospital 在小医院附近。
高中英语语法It的用法讲解与练习
It的用法It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。
其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
一、要点点拔1．代替上文中提到过的人或事物。
指代人时，一般用于小孩或身份不十分明朗的人。
1) －Who is the baby?－It‘s my teacher’s son．2) －Who is that gentleman?－It's my friend Tom．He(不可用It) wants to see you．2．用于表达天气、环境、时间、距离、季节等。
例如：1) It’s half an hour’s walk from here to our school．2) It‘s nice and warm here．3) But it's two o'clock now, and it's time for us to go to school．3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。
1).It 替代真正的主语——动词不定式短语.It is easier to say than to do .It is a good act to help the others.2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中.It’s no harm drinking running water in that area。
It’s foolish talking like that.3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类：①It is a pity (a shame ,a fact ,a wonder ,a good thing, etc. ) that…It is a shame that he didn’t pass the exam.②It is strange ( surprising, obvious ,true, good, possible, clear, etc. ) that…。
(完整版)“It”用法及句型讲解与习题汇总,推荐文档
“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. 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/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 , work 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 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。
高中英语it的用法课件-(详细有高考题-精品)
动词 +it + that + clause
enjoy, like, / love, dislike, appreciate hate, don't mind, be fond of, feel like, see to / depend on / insist on
例 : I hate it you can dance so well but I can't.
2.非人称代词it
it有时并不指具体的东西，而泛指天气、时间、环境等， 称为非人称的it： ⑴.指天气：
It is a lovely day, isn’t it? It is a bit windy.
⑵.指时间:
It was nearly midnight when she came back.
⑶.指环境:
no good 3. S + V + it +
no use
+ doing sth.
形式宾语归纳
该句型中的it 作形式宾语，记忆方便---“6123结构”。
6 主句中常用的动词： think,believe,make,find,consider,feel； 1 形式宾语it； 2 宾补的两种形式：形容词或名词； 3 真正宾语的三种形式：
an honour
…
… said It is / was p.p. known + that-clause believed
…
1. It is clear ( obvious， true， possible， certain....) that .....
该句型中it 是形式主语，真正的主语是that 引导的主 语从句，常译为“清楚（显然，真的，肯定．．．）” 是主语从句最常见的一种结构。
中考英语it的常考句型及知识点归纳(附练习题)
中考英语it的常考句型及知识点归纳（附练习题）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。
It's hard work, but I enjoy it.工作很辛苦，可是我乐意干。
“Where is the dog?”“It’s 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It's 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：“What's this?”“It's 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：It's 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It's time for sth.该做某事了。
It's time to do sth.该做某事的时候了。
It's time for sb to do sth.某人该干某事了。
it的用法及例句
it的用法及例句It的基本用法全部整理在下面了，大家记得收藏起来，后面经常翻看和识记这些用法，达到熟练运用。
（一）用it作人称代词1）it最基本的用法是人称代词，主要用来表示刚提到的东西以避免重复The car accelerated as it overtook me.那辆汽车一加速就超过了我。
The action of salt on ice causes it to melt.盐作用于冰而使其融化。
I don’t care what a car looks like as long as it gets me from A to B.我到不在乎汽车的样子，只要能把我从一处载到另一处就行了。
I’ve never been there but it is,by all accounts,a lovely place.我从来没去过那个地方，但人们都说那地方很好。
The boat stuck on a sandbank but we soon got it afloat again.小船在沙丘搁浅，没过多久我们就又让它自由行进了。
His book reached an even wider audience when it was filmed for television.他的书拍成电视以后，受众范围更广了。
2）也可代表抽象的事物It was acclaimed as a great discovery.它被誉为一次伟大的发现。
Will you pay cash or should I charge it to your account ? 您愿意付现金还是计入您的账？Communication technologies are far from equal when it comes to conveying the truth.交流的技术在传递事实时差别是很大的。
3）也可指动物或未知性别的婴儿- Is this your dog ?- No,it isn’t.Her baby is due next month,she hopes it will be a boy. 她怀的孩子应该下月出生，她希望是个男孩儿。
it用法及练习附答案
高三一轮复习It的用法总结It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。
其考查方式多通过“语法填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
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.It’s hard work, but I enjoy it.“Where is the dog?”“It’s in the bedroom. ”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?There is a knock on the door. It must be the postman.【说明】在答语中，常用来指本人，如说It’s 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：“What’s this?”“It’s a new machine. ”Nothing is wrong, is it?二、it 作非人称代词的用法1. 基本用法：主要用于指时间、距离、价值、天气、气候及温度等自然现象。
如：It’s too late to go there now.It rained all day yesterday.It can get very hot here.2. 用于某些句型：It’s time for sb to do sth. 某人该干某事了。
It’s (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”)It’s first (second) time + that-从句. 某人第几次干某事。
(从句谓语用现在完成时)It’s + 时间段+ since-从句. 自从……有一段时间了。
“IT”用法考点精讲和精练
“IT”用法考点精讲和精练“IT”用法考点精讲与精练山东高青孙玉忠it 是近年来高考的热点之一。
它不仅可以指代时间、地点、天气、距离等，还可以作形式主语和形式宾语，同时还可以用于强调句结构中。
下面结合高考试题来谈谈它的用法，希望能对同学们有所帮助。
考点一、it作代词时的用法1．用作人称代词，代替前文提到的事，例如：The snake is not a warm—blooded animal. It’s a cold blooded one. 蛇不是温血动物，它是冷血动物。
【高考链接】I hope there are enough glasses for each guest to have ______.A. itB. thoseC. themD. one解析：本题答案为D。
本题考查代词词义辨析。
one 指代上文出现过类似的事物；it 指代上面的提到过的事物；them 指代上文中提到过的事物的复数形式；those 指代那些事物。
根据本句意义，可知最佳答案为D。
2．用以代替指示代词，例如：---What’s this ? ---- It’s a book. ----这是什么？---- 这是一本书。
3．起指示代词的作用，指一个人或事物，例如：----Who’s knocking at the door ? ---- It’s me .---谁在敲门？----- 是我。
4．指时间、季节、天气、距离、环境等，例如：It’s very cold outside. Put on more clothes. 外面非常冷，多穿点衣服。
5.替代词“it, one与that”区别和联系it用来指代前面提到的同一个事物或人；one用来指代前面同名异物的名词, 指的是同类中的一个，所以属于泛指，相当于“a/an+名词”。
one只能代替可数名词，其复数形式是ones；that用来指代前面同名异物的名词，指的是同类中的一个，属于特指，相当于“the+名词”。
it地用法和练习(带问题详解)
重点代词it的用法和练习（含答案）(1)it用做人称代词的用法it用作代词，意为“它”，既可以指人，也可以指物。
it做人称代词，可以用来代替一个名词、短语、从句或句子，以避免他们在句中的重复。
这是可以指提到过的，也可以指未提到的，在句中做主语、表语和宾语。
1)指事物，it可以知道除人以外的任何事物或动物。
I dropped my watch and it broke.我把手表掉在地上摔坏了。
2)指人，it主用用于指性别不明的婴儿或只听其声不见其人的人，如：Is it a boy or a girl?是男孩还是女孩？There is a knock on the door. It must be the postman. “Listen. Someone is crying..” “Oh, it must be Mary.”3）代替某些代词。
代词it可以用于代替指示代词this, that以及复合不定代词something, anything, nothing等，如：“What’s this?” “It’s a new machine”(2)it用作非人称代词的用法1)it用作非人称代词主要用来指时间、距离、价值、天气、气温及温度等自然现象。
如It’s too late to go there now.现在去那已经太迟了。
It rained all day yesterday.昨天下了一整天雨。
2)用于某些句型。
It’s time for sth. 该做某事了。
It’s to do sth. 是时候该做某事了。
It’s time for sb to do sth. 某人该干某事了。
It’s (about/high) time +that--从句。
某人该做某事了。
（从句谓语用过去式，有时候用should+动词原形）It’s first(second)time +that--从句。
某人第几次干某事。
（从句谓语动词用现在完成时）It’s +时间段+since从句。
it做形式主语用法大全含练习及答案
it做形式主语用法大全含练习及答案It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question 等，如：It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.3. It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that h e didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. It + be + 形容词+ of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。
高中英语it 用作形式主语宾语的用法及24个it句式盘点总结(有习题)
高中英语it 用作形式主语/宾语的用法及24个it句式盘点总结一、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it，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it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 it 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的用法及练习
It的用法及练习It 的用法1. it 常用作形式主语代替真正的主语不定式、动名词或从句。
●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，possible，likely，right，wrong，important，polite，clear，obvious，certain，useful，useless，dangerous…●It +be+ adj + of sb+to do sth = sb be +adj to do sth※此处adj. 通常为描述人的品质形容词：kind，nice，rude，cruel ，considerate，thoughtful，careful，careless，silly，foolish，stupid，clever，crazy, wise…●It + be +no use/ good/ useless + do ing It is a waste of time/money doing stheg: It is a waste of time talking to him.●It + be + adj./ n. /v p. p. /ving+ that- clause※It is (amazing/surprisng/shocking/astonishing/disppointing…)that…“令人吃惊/失望的是…”※It is clear(obvious,true, certain…)that…※I t is/ was +adj (important/ necessary/ urgent/ essential/ natural/ vital )+that从句（should do）※It is a pity/a shame/no wonder/strange+that从句表示“失望、惊奇、可惜、怀疑”等，should+v should不可省略※It is suggested/ordered/desired/requested/required/insisted/propos ed/demanded/commanded/advised/recommended/urged+ that从句(shoud)+v※It is +v-ed+ that从句…=sb./sth. is + v-ed + to do /to be doing/to have doneIt is said (reported/learned/believed/thought/known/told/hoped/proved /universally acknowledged/ universally accepted/ universally recognized.....) that ...eg: It is said that he will go abroad . = He is said to go abroad.It is said that Bell invented the first telephone in the world.= Bell is said to have invented the first telephone in the world.It is universally acknowledged that dogs have an acute sense of smell.It is important for us to master a second language.It is considerate of you to turn down the radio when the baby is asleep.It is no use crying over spilt milk.It is a fact that English is being accepted as an international language.It needs further discussion whether we’ll build a lab-oratory or not.It is shocking that people in those areas should live in such overcrowded slums.It is suggested that he not go there alone.It is important that we should speak politely.It is no wonder that he should have made progress.（失望）It is a shame that he should break his promise.(责备)It is a pity that he should miss a wonderful film.（失望）It is strange that he should marry her.（惊奇）2. it 作形式宾语，代替后面的真正宾语不定式、动名词或从句。
it的用法及强调结构(附常见考点解析及精选练习题)
it的用法及强调结构I. 作代词1. 用作人称代词，代替前文提到过的事物（是同一物）。
My pen is missing. I can’t find it anywhere.I was disappointed with the film. I had expected it to be much better.2. 代词it有时不特指某件东西，而代表前面提到的整个事情。
Tom’s mother kept telling him that he should work harder,but it didn’t help. (but连接两个并列分句，而不是非限制性定语从句，用it)The weather turned out to be very good,which was more than we could expect. （前面用逗号隔开，没有并列连词，是非限制性定语从句，which指代前面整个主句所表达的内容，用which不用it）3. 用来代替指示代词this,that.--- What’s this ?--- It’s a book.4. 表示时间、距离、天气、价值等。
It’s ten o’clock now.（指时间）---How far is it from here to the station?---It's about two kilometers.（指距离）It is rather cold today, isn't it?（指天气）---What's the cost of the dictionary?---It is twenty dollars.（指价值）5. 可用来指做某个动作的人或与某事有关系的人。
---- Who is making such a noise ? --- It must be the children.II. 引导词it1. 作形式主语，代替由不定式短语、动名词短语或从句表示的真正主语。
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“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. 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/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 , work 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 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：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. verb+it+adj./noun (one's) doing (adj.=useless/worth/worthwhile)(noun=no use/no good/worth one's while/a waste of time/money/energy/words) (verb=think, believe, suppose, consider, feel, make, keep…)例I'll make it worth your while telling me about his secret.3. verb+it+ important/unimportant/necessary/unnecessary/natural/essential that … (should)…verb+it+of much/great/no/little importance that…(should)…(verb=think, believe, suppose, consider, feel, make, keep…)例I think it important that you (should) attendthe conference.4. verb + it+ as+ noun/adj.+ clause (verb=accept, regard, take, see, view)例The lecturer takes it as encouraging when so many students attend his lecture.5. 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 in mind that…例Don't bother to arrange anything. Just leave it to me to sort out.6. 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.7. It用在不能直接跟宾语从句的介词后面，宾语从句紧跟it之后（except that例外）例I'm for it that you will follow their advice.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。