it的用法和练习(带答案)
it的用法(专项总结及训练)
---------------------------------------------------------------最新资料推荐------------------------------------------------------it的用法(专项总结及训练)It 的用法（专项总结及训练）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): ①Is this your dog？No, it isnt. ②They got a baby and it was a ten-pounder 3. 也可指抽象事物或指抽象环境和情景: ①I 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：①指天气：It is a lovely day, isnt it? ②指时间: It was nearly midnight when she came back. ③指日期:It is April First today.④指距离:It is some 3000 kilometers from Beijing to Guangzhou.⑤指价值:It is three dollars. ⑥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.....). 2.泛泛的指某件事：(有时泛指一般情况) ①It doesnt matter. ②How is it going?(情况怎样) 3.it 用在一些词组中， it 没有特别的意思1/ 11The last train’s gone. Come on, we’ll foot it.(来，咱们步行吧。
(完整版)it做形式主语用法大全含练习及问题详解
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 he 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。
初中英语-词法-it的特殊用法 考试练习题
初中英语-词法-it 的特殊用法 考试练习题姓名:_____________ 年级:____________ 学号:______________1、浪费这么好吃的食物真是可惜。
(waste, such)_______________________知识点：it 的特殊用法 【答案】It ’s a pity to waste such delicious food.【详解】固定句式：it ’s a pity to do sth“ 做某事很可惜 ” ； waste“ 浪费 ” ； such“ 这么 ” ，修饰名词 food“ 食物 ” ； delicious“ 美味的 ” ，故填 It ’s a pity to waste such delicious food.2、It ____ ____ for me. ( 这对我来说很容易 )知识点：it 的特殊用法 【答案】is easy【详解】固定句式：It is+ 形容词 +for sb to do sth ：对某人来说做某事是 …… ， easy ：容易的，故填 is ； easy 。
3、It ’s important ____________us ___English well.A ． of, to learnB ． for, to learnC ． to, to learnD ． with, learning知识点：it 的特殊用法 【答案】B【详解】句意：对于我们去学好英语是重要的事情。
考查固定句型：It is + 形容词 for/of sb.+to do sth.for sb. 常用于表示事物的特征特点，表示客观形式的形容词，如easy, hard, difficult, interesting, importang, 分析： important 是重要的，因此用介词 for. 故选 B4、playing the piano, takes, Wendy, to practice, an hour, it ( 连词成句 )______________________________.知识点：it 的特殊用法 【答案】It takes Wendy an hour to practice playing the piano【详解】根据标点可知，句子是陈述句，分析所给词汇可知，此处是It takes sb+ 时间 +to do sth 的结构，用不定式作主语， it 作形式主语；所以 to practice playing the piano 作主语； it 作形式主语；故填 It takes Wendy an hour to practice playing the piano“ 温迪花了一个小时练习弹钢琴 ” 。
专四练习(It用法)
例题整理1. 历年真题1）It was recommended that passengers ___ smoke during the flight. (1994年第58题)A. notB. need notC. could notD. would not【译文】建议旅客在乘坐飞机时不要吸烟。
【答案】A【解析】It is +表示主观意愿的动词+ that + sb. (should) (not) do句型中，that从句中的谓语动词要用虚拟语气,其他选项的情态动词都不可取。
2）It was as a physician that he represented himself, and _____ he was warmly received. （1997年第49题）A. as suchB. such asC. as thatD. so that【译文】他以内科医生的身份出现，受到热情接待。
【答案】A.【解析】本题it的用法It is + noun.+ that句型，A项as such （照此，以此身份），B项such as (例如)，C项as that 无此说法，D项so that (为了)。
3）“What courses are you going to do next semester?”“I don’t know. But it’s about time ___on something.” (2002年第51题)A. I’ d decideB. I decidedC. I decideD. I’ m deciding【译文】下学期你想修什么课程？---我不知道，我该作出决定了。
【答案】B【解析】It’s (about) time (that) … 是虚拟语气句式，其谓语动词要用一般过去式，因此B项是正确答案。
4）It is imperative that students ____ their term papers on time. （2004，46）A. hand inB. would hand inC. have to hand inD. handed in【译文】学生有必要马上交期末论文。
it的用法和练习(带答案)
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.“Liste n. Some one is cryin g.. ”“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。
(完整版)It用法练习题及答案
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：① It 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.② It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that… 。
it的用法总结
it的用法总结it 的考点：1.为避免重复，it可用来代替前面说过的短语或句子。
如：I tried to persuade my father to give up smoking, but found it impossible. (it=to persuade my father to give up smoking)2.It/This/That+be+the first(second, third...) time+that这个句型表示截止到说话时为止的某人的一种经历，关键是注意time前有序数词，主句是一般现在时is时，从句要用现在完成时；如果主句用一般过去时was 时，则从句须相应地用过去完成时。
如：This is the first time(that) these Europeans have visited the Great Wall.It was the fifth time(that) I had paid a friendly visit to America.3.强调句：It's/was+被强调成分+that/who+其他成分原句：I told Jim the news in our office yesterday.【注】强调句与主语从句虽然在形式上很相似，即都含有it is(was)...that。
但，区别在于：强调句去掉itis(was)…that之后，句子结构仍然完整，而主语从句却不能这样。
如：(It is)our hope(that) the two sides will work towards peace.4.it 作形式主语：1）It is/was+adj.+subject-clause可用于此句型的形容词有：clear, certain, funny, good, impossible, likely, natural, obvious, possible, probable, strange, surprising, true, unusual, wonderful 等。
“It”用法及其句型和固定搭配讲解(含课后巩固练习题))
“It”用法及其句型和固定搭配讲解现将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Ifs kind of you to help me with the problem.(3)It替代作主语的动名词的常见句It's no good/use doing...It's (well)worth doing/..It's (well)worth one's while doinIt'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(1)It is + noun+从句例子：It is no secret that the president will continue pushing the new policy.(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 muchimportance 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, 第几次做某事了例句：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 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，动词不定式、动名词置于句尾。
英语中it的用法 系统练习(答案详解)
英语中it的用法系统练习（答案详解）一、it作代词(1)在答语中替代this或that。
如：---What's this？---It's a frog.(2)指已提到过的物体。
如：I've lost it on my way home.(3)指情形、行为等。
如：Jack is ill. Have you heard about it?(4)指人（不明的人或婴儿）。
如：Who is it?(5)指天气、温度、时间、距离等。
如：It is raining. It's very hot. It's five o'clock.二、引导词it(1)作形式主语。
如：1) It is difficult to understand the passage.2) It is no use trying.3) It is said that the meeting will be put off.4) It+take+(sb.) some time / some money+to do sth.例如:It will take them more than ten years to complete the Three Gorges Dam.5 )It+be+said / reported / told等+that-clause. 例如:It is said that he will leave for Beijing tomorrow.6) It+vt.+sb.+that-clause.例如:It worried her a bit that her hair was turning grey.[原题再现]①________is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It②In fact________ is a hard job for the police to keep order in an important football match.A. thisB. thatC. thereD. it答案: ①D ②D（2）作形式宾语。
高一(17)it的用法讲解、练习+七选五+完形填空+短文改错
高一(17)i t的用法讲解、练习+七选五+完形填空+短文改错-CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN高一英语暑期复习材料（17）词汇巩固A New Farming Way 新的耕种方式Tuan was a farmer in Vietnam. For （decade）, he had been (努力做)rid his family of hunger. However, it always (使……困惑) him how to expand the output of his crop s. This （disturb）problem (导致) his （regret） being a farmer. He (宁愿) have chosen another job.One day, when skim ming through a newspaper, Tuan read a comment on Yuan Longpin. He underline d Yuan’s nationality and occupation, and then (集中注意力) his discovery and the statistic s of his research. He found the knowledge Yuan circulate d very practical.（因此）, he made a summary and began to （建立） a new farming method. He planted super grain of rich nutrition and （装备；配备） himself to keep his crops root s free from bacteria and pest s. He also enriched mineral s in the soil while_______________(reduce) chemical fertilizer s. Though it cost him more time and (free), he was full of hope.The next year, Tuan was sunburnt but (对……满意) his production very much.________________ (幸亏) Yuan Longpin, he not only won the battle against hunger, but he could also ___________（出口）his crops abroad.It的用法一、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 it⑵.指时间: It was nearly midnight when she came back.⑶.指日期:It is April First today.⑷.指距离:It is some 3000 kilometers from Beijing to Guangzhou.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 thereIt'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用法练习及答案
A.wasthemountainclimberrescuedB.thatthemountainclimberwasrescued
C.whenthemountainclimberwasrescuedD.thenthemountainclimberwas
11.ItwasinIndonesia,theUNofficialsbelieve,___thetsunanicausedthegreatestdamage.
A.whereB.whichC.whenD.that
12.Itwasinthefactory__producedTVsets___ourfriendwasmurdered.
rescued
9Why!Ihavenothingtoconfess.__youwantmetosay?
AWhatisitthatBWhatitisthatCHowisitthatDHowitisthat
10Itwasinthisroom___Ioncelived___wehadameeting.
Awhere,thatBwhich,thatCwhere,whereDthat.where
A.which,whichB.that,whichC.that,thatD.where,that
13.Itwaslastyear__youtaughtmehowtodrive.
A.whenB.thatC.whereD.which
14.Itwasforthisreason__herunclemovedoutofNewYorkandsettleddownina
11.要花多年的时间才能掌握一门新的语言。
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 he 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。
（完整版）初中it用法练习题
It was the town where we lived for three years.此句是定语从句，因为还原以后的句子为: We lived the town for three years.缺 少介词, 而 It was in the town that we lived for three years.这就是一个强调句了。 ---------------------------------------------------------------最新资料推荐-----------------------------------------------------强调中心也可以是疑问词，这时要将疑问词置于句首，构
除强调人时用 who, whom 外，其余情况都用连词 that。 被强调的对象仅限于句子的主语、宾语、宾语补足语和部分状语，即除谓语和定语以外的句子成分。
这部分状语主要包括地点状语、由 before, when, after, not until 等引起的时间状语从句、由 because, because of 引起的原 3/ 24 因状语、由 by 引起的方式状语等。 当被强调的对象是人时，可用 who, whom 或 that，其余情况一律用 that; 当被强调对象在从句中做主语时用who/that,当被强调 对象在从句中做宾语时用 whom/that。 原句：
My father did the experiment in the lab yesterday evening.昨天晚上我父亲在实验室做实验。 It was my father did the experiment in the lab yesterday evening.昨天晚上是我父亲在实验室做实验。 It was the experiment that my father did in the lab yesterday evening.昨天晚上我父亲在实验室里做的是实验。 It was yesterday evening that my father did the experiment in the lab.我父亲是昨天晚上在实验室做实验的。 It was in the lab that my father did the experiment yesterday evening.我父亲昨天晚上是在实验室里做这个实验的。 另外，再注意两点：
超详细的It的用法归纳总结（附习题及答案）!
超详细的It的用法归纳总结（附习题及答案）!
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。
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。
全面总结It用法及相关语境练习
全面总结It用法及相关语境练习A. It用法第一类：It充当句子的形式主语,代指不定式to do, 动名词v.ing及that 从句。
备注1.(It is) no wonder/surprise+ that cl…难怪……例：It is no wonder that she is so excellentsince she is so hardworking.她学习如此勤奋，难怪她如此优秀。
口语中，no wonder前的it is经常省略；2. It is a pity/shame for sb. to do /that cl.某人做某事令人遗憾。
例:What a big pity it is for him not to makegood use of the chance!他没有好好利用这次机会真是太可惜了！此类句型中的名词还有：a shame,a (big)surprise,sb.’s belief等。
3.It is one’s responsibility/duty to do sth./that cl.做某事是某人的责任。
例：It is everyone’s responsibility/duty torespect and take care of the elderly.尊重照顾老年人是我们每个人的义务职责。
4. It is one’s （great）pleasure / honor to do sth./that cl.某人倍感高兴/荣幸做某事。
例：It is my great honour to give a speech toall of you about building a harmoniousschool!我很荣幸在此做关于创建和谐校园的演讲！例：It is always a pleasure to greet a friendfrom afar.有朋自远方来，不亦乐乎。
it用法大全(形式宾语形式主语)
3）.It +n+that ... 1. It is a pity ( a shame ... ) that ...
that后的从句一般用虚拟语气（should + 动词原形）， should可省去．表示出乎意料，常译为“竟然”。没有 这种意义时，则不用虚拟语气。
It doesn’t matter if they are old.
.2.作形式主语替代不定式
1). It takes sb. ... to do sth. ＂做．．．要花费某人．．＂ It took thousands of people many years to build the Great Wall.
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： 2.1.指天气： It is a lovely day, isn’t it? It is a bit windy.
2.2.指时间: It was nearly midnight when she came back.
2）.It is +v-ed +that 从句 ① It is said (reported， learned....) that ...
据说（据报道，据悉．．．）“。 It is said that he has come to Beijing.
= He is said to have come to Beijing.
难怪他不愿去。 在该句型中如果用肯定形式，表示“真奇怪， 真是令人惊讶”；
It is a wonder that he reused such a good offer.
It的特殊用法
It的特殊用法一、作形式主语1．（1）It’s + adj.+ to do sth.It’s important to study English well.(2 ) It’s + adj. +that…It’s important/ necessary/ likely/ possible/ certain/…that…It’s likely that he will win the game.It’s certain that he will come this afternoon.2. It’s + v-ed + that…(1) It’s said/ thought/ believed/ supposed/ reported/ proved/ known…that…It’s known that the earth travels round the sun.= As is known to everybody, the earth travels the sun.= What is known to everybody is that the earth travels the sun.(2) It’s suggested/ advised/ proposed/ requested/ required/ insisted/commanded/ demanded/ ordered/…that…It’s suggested that she（should）finish her homework this afternoon.It’s required that I (should) go at once.3. (1) It’s + 名+that…常见的名词有：a pity, a fact, an idea, an honor, no wonder等It’s a pity that he can’t come to the party.It’s a fact that he didn’t pass the exam.It’s a good idea that we’ll go outing.It’s an honor that I was invited to the meeting.(It’s)no wonder (that) he always takes the first place in the exams.(2) It’s + 名+doing常见的名词有：use, goodIt’s no use crying.It’s no good crying over spilt milk.【谚语】牛奶溢了，哭也没用。
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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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。
自从…以来有一段时间了。
It’s +时间段+before 从句。
过多长时间才…(3)it用作形式主语的用法。
1)当不定式、动名词、从句等复杂成分做句子主语时，为保持句子的平衡，通常把真正的主语放在句末，而句首使用形式主语it。
如It’s very important to remember this.It’s hard work climbing mountains.It’s unknown when he will come.2)it用作形式主语的重要句型。
①It+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，太愚蠢了。
提示：此句型中的介词of和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”。
②It takes/took sb+时间段+to do sth.某人做某事花了…时间。
It took me two hours to finish my homework.③It is up to sb to do sth.该由某人做某事了。
It’s up to you to make the choice.该由你来做选择了。
④It looks(seems,appears,happens,occurs) that (as if) …似乎…It seems as though he didn’t recognize me.(4)it用作形式宾语的用法。
1)当不定式、动名词、从句等复杂成分用作宾语且后面跟有宾语补足语时，通常会在宾语补足语前使用it作形式宾语，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）”I find it difficult to do the job well.I think it best that you should stay here.We think it no use complaining.2)用作形式宾语的几个特殊结构：①动词+it+that-从句I think it (that) he will come on time.②动词+it+when(if)-从句We rally appreciate it when she offered to help.③动词+prep.+it+that-从句I can’t answer for it that he will come.我不能保证他会来。
④动词+it+介词短语+that-从句I took it for granted that he would help us.(5)it在强调句中的用法。
强调句的基本结构是：It+be+被强调部分+that(who)+其他部分。
It was a computer that he bought last week.练习部分1. I like in the autumn when the weather is clear and brigh t. A. this B. that C. it D. one[解析] C.句中like为及物动词,后面需要跟宾语.而like之后不可直接接从句作宾语.it可用于某些动词(hate, appreciate…)和介词之后作笼统宾语.2. He was nearly drowned once.When was ?was in 1998 when he was in middle school.A. that; ItB. this; ThisC. this; ItD. that; This[解析]A. 第一空用that指代上文提到的事情; 第二空用it指代第一空的that3. The Parkers bought a new house but will need a lot of wo rk before they can move in.A. theyB. itC. oneD. which[解析] B此处it指代前面出现的a new house. it指代上文提到的同一事物,为特指;而one通常指代同类事物中的某一个.4. Someone is ringing the doorbell. Go and see .A. who is heB. who he isC. who is itD. who it is[解析] D此处it用作人称代词,指不明身份,性别的人;宾语从句应用陈述语序.5. In fact is a hard job for the police to keep order in an important football match.A. thisB. thatC. thereD. It[解析] D此处it用作形式主语.6. Mike’s mother kept telling him that he should work hard, but didn’t help.A. heB. itC. sheD. which[解析] B此处it用以指代前面的句子,可用that替换.7. Since you have repaired my computer, is no need for me t o buy a new one.A. itB. thereC. thisD. that[解析] B考查固定句型 There is no need for sb to do sth8. The official made clear that he would do everything possi ble to solve the problem.A. itB. thisC. thatD. him[解析] A此处 it用作形式宾语.9. Do you like here?Oh, yes, the air, the weather and the way of life. Everything i s so nice.A. thisB. thereC. thatD. it[解析] D此处 it泛指自然环境.10. Bill’s aim is to inform the viewers that cigarette advertisi ng in TV is illegal, ?A. isn’t itB. is itC. isn’t heD. is he[解析]A主语为“ Bill’s aim”.11. is mentioned above, the number of the students in senio r high school is increasing.A. whichB. AsC. ThatD. It[解析] B非限制性定语从句中, as /which均可指代整句话的内容,但 whi ch只能放在主句后,译为“这一点”; as则位置灵活,译为“正如”.12. It was with great joy he received the news that his los t daughter had been found.A. becauseB. whichC. sinceD. that[解析] D考查强调句型.13. It was back home after the experiment.A. not until midnight did he goB. until midnight that he did n’t goC. not until midnight that he wentD. until midnight when he di dn’t go[解析] C考查not until结构强调句型.14. Why! I have nothing to confess. You want me to say?A. What is it thatB. What it is thatC. How is it thatD. How it is that[解析] A考查强调句型的特殊疑问句句式.15. It is the ability to do the job matters not where you c ome from or what you are.A. oneB. thatC. whatD. it[解析] B考查强调句型.被强调部分是not where you come from or what you are (but ) the ability to do the job.为了平衡结构,部分移至句尾1. （据报道）a lot of people lost their jobs in the city last month.(report)2. （据报道）, a lot of people lost their jobs in the city last month.(report)3. （毫无疑问）he will be admitted to the key u niversity.(doubt)4. He has made some great movies. （这一点是毫无疑问的）.(doubt)5. （没必要）for you to get up early tomorrow.(n eed)6. （碰巧）I had been away when he called.(happen)7. （看来）nobody knows what has happened.(seem)8. （看起来似乎）it's going to rain.(look)9. （很可能）the thieves don’t know how much it is worth.(likely)10. （我也许可以）to leave a message for her.(pos sible)1. It’s repo rted that2. As is reported3. There is no doubt that4. There is no doubt about it5. There is no need6. It happened that7. It seems that8. It looks as if9. It’s likely that 10.It’s possible for me11. It’s no use （为打翻的牛奶而哭泣）.(cry)12. （抱怨是毫无用处的）, they never listen.(use)13. （难怪）you’ve achieved so much success.(won der)14. (很明确）most of the farmers have brought in more money by all means.(certain)15. （据说）the professor has already succeeded in carrying out this experiment.(say)16. The professor is said 已成功）in carrying o ut this experiment.(succeed)（比较句型15）17. （感到遗憾）I haven’t been to the get-togeth er.(pity)18 （使之成为一种惯例）that I get up at six ever y day in the morning.(rule)19. I （认为有必要）to take plenty of hot water every day.(think)20. It’s high time that we （采取措施）to st op pollution.(take)11. crying over spi lt milk 12. It’s/There is no use complai ning 13. It’s no wonder that14. It’s certain that 15. It’s said that 16. to have suc ceeded 17. I feel it a pity that18. I have made it a rule 19. think it (is) necessary 20. took/should take measures21. （要花费她很长时间）to recover from the ill ness.(take)22. This/It is the third time that I （看那部电影）.（see）23. It was the first time that she （到长城）.（be）24. It is / has been two years （自从他出国）.（go）25. （对你没什么差别）whether I like it or not，b ecause you never listen to me.（make）26. （用不了多久）before we know the result of the experiment.（be）27. Measures have been taken to solve the problem，but（可能要过段时间）before the situation improves.（some）28. （没关系）the weather was bad.（matter）29. （是否要紧）whether we go together or separ ately?（matter）30. （我突然想起）that he might have forgotten our date.（occur）21. It will take her a long time 22. have seen the film 23. had been to the Great wall24. since he went abroad 25. It makes no difference to you26. It won’t be long27. it may be some time 28. It didn’t matter that29. Does it matter30. It occurred to me31. （可能性不大）he will change his mind.（chanc e）32. （很可能）we will go to Beijing.（chance）33. （似乎有）hundreds of people in the field；it was quite full.（seem）34. 曾经有）a church at the corner of the street.（be）35. She （阐明清楚）she had nothing to do with the decision.（make）36. I （确定）everything is ready.（see）37. What a pity my new computer doesn’t work.（一定有什么问题）with it.（wrong）38. （结果）she was a friend of my sister.（tur n）39. Come and see me when （你方便的时候）.（con venient）40. （没多大意义）complaining . It doesn’t make difference.（point）31.There is little chance that32. There is a good/high chance that/There are chances that/Chanc es are that 33. There seemed to be 34. There used to be35. made it clear that 36. will see (to it) that37. There must be something wrong 38. It turned out that39. i t’s convenient to/for you 40. There is not much poin t (in)（注：专业文档是经验性极强的领域，无法思考和涵盖全面，素材和资料部分来自网络，供参考。