2011届高考英语一轮复习讲解：it的用法
高考英语复习 It的用法讲解
It 的用法一链接高考二主要内容1. 作人称代词或非人称代词2. 指无生命的东西或不详的性别3. 作形式主语4. 作形式宾语5. 用于强调句型中6. 用于几种特殊句式中三练一练一链接高考●主要形式：语法填空、写作等●考点：1. 作人称代词或非人称代词2. 指无生命的东西或不详的性别3. 作形式主语4. 作形式宾语5. 用于强调句型中（时态问题）6. 用于几种特殊句式中（特殊句式用于写作的积累）二·主要内容“It”的用法极其广泛,既可以作人称代词,也可以作非人称代词,表示时间、距离、气候等；既可以充当形式主语和形式宾语,也可以用于强调句结构中;它还常常用在某些动词或特殊词类之后,构成习惯用语。
下面就其使用的重点及难点,分门别类地加以总结。
1. 作人称代词,可以用来代替人、物或事；亦作非人称代词，表示时间、天气、季节、距离等。
It i s r aining c ats a nd d ogs. 雨下得很大。
It is a long way to the college. 大学距这儿很远。
It is eight o’clock sharp now. 现在是8点整。
2. 指无生命的东西，性别不详或性别无关紧要时，可用“It”来指动物，幼童等。
The baby cried because it was hungry。
小宝贝因为饿而哭了。
3. 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，这时就需要借助“It”作形式上的主语，而把整个句子的主语移到句子后边去，使句子看上去平稳一些。
It is difficult to study and work at the same time.一边工作一边学习很难。
It is very clear that the elephant's l eg is round a nd tall like a tree.大象的腿跟树干一样圆而高，这点显而易见。
2011高考英语语法专题第二讲代语和it的用法总复习典例精选精析北师大版
语法专题复习方略第二讲代语和it的用法应考题感悟..............................1. 用适当的代词填空I.One of the most important questions they had to consider was _______________ of publichealth.解析：句意：他们必须考虑的最重要的问题之一就是公众的健康问题。
句中that特指前面的question。
答案：that2. The CDs are on sale ！Buy one and you get ________ completely free.解析：语意为：光盘特价了！买一送一！空白处填one,指代one CD。
答案：one3. Be ing a pare nt is not always easy，and being the pare nt of a child with specialn eeds ofte n carries with ___________ e xtra stress.解析：句意：当一名父亲或母亲并不总是容易的，当一名有特殊需要的孩子的父亲或母亲经常还要承受额外的压力。
此处的it指代的是前面提到的"bei ng a pare nt is not always easy ”这种情况。
答案：it4.Over the past 20 years，the In ternet has helped cha nge our world in ______________ wayor ano ther for the better.解析：考查固定短语。
in one way or another意思是"以某种方式”，相当于by some mea ns答案：one5.Ja ne was asked a lot of questi ons ，but she did n't an swer ________ of them.解析：句意：Jane被问了许多问题，但她一个也没有回答。
高考英语一轮复习 it的用法讲解
入舵市安恙阳光实验学校高考英语一轮复习讲解：it的用法【知识要点】It的用法（一）作人称代词1、it代替前面（或后面）的单数名词或分句等所表示的事物。
e.g. You cannot eat your cake but have it.（it代替前面的cake）Although we cannot see it, there is air all around us. （it 代替后面的air）They say he has left town, but I don’t believe it. （it代替前面They…town分句中的情况）2、代替有生命但不能或不必分阴阳性的东西（包括婴儿）。
e.g. Yesterday we saw a big tree. It was fully twenty metres high. （it代替前面的tree）The baby cried because it was hungry. （it代替前面的baby）3、在某些习惯说法中，可以代替人。
e.g. ---- Someone is knocking at the door, Peter.---- Who is it?---- It’s me.---- Who are singing? ---- It is the children.---- The light is still on in the lab. It must be the third-year students doing the experiment.4、it与one的区别：这两个词都可以代表前面说过的名词，但it用于同名同物的场合；one则用于同名异物的场合。
e.g. ---- Do you still have the bicycle? ---- No, I have sold it.---- Is this knife yours? ---- No. It is Xiao Zhang’s. Mine is the one on the desk.5、it与that的区别：两词都可代替某一特定名词，但that指同一类，并非同一个。
高考英语考点 15 It的用法
考点十五It的用法it作为代词用法非常灵活，可用于代替上文中提到的事物，代替上文中说到的一件事，代替不知情的人（尤其是不知身份、性别和姓名的人）。
也可用于表示时间、天气、距离、计算结果等。
还可用来代替不定式、动名词、从句等，充当形式主语或形式宾语。
一、用于指人以外的一切生物、无生命的东西和事情一般指说话者心目中已经了解或所指的生物、无生命的东西或事情，没有性别的区分；可以是可数名词，也可以是不可数名词，在句子中既可以作主语，也可以作宾语。
1. 指动物和植物。
☞ Look at that bird. It always comes to my window. 看看那只鸟。
它总是飞到我的窗前来。
2. 指代无生命的东西。
☞This is my watch. It’s made in Switzerland. 这是我的手表。
它是瑞士产的。
3. 代替上文提到过的整个事情。
☞Well, you mustn’t play on the road. It’s dangerous! 哦，你不能在马路上玩。
这是危险的！二、用于指代人1. 指代说话者心目中不太清楚的那个人，常在打电话或敲门时用。
☞—Who is knocking at the door? ——谁在敲门？—It’s me. ——是我。
2. 指说话者心目中的那个人。
☞—Look, someone is coming. Who can it be? ——看，有人过来了。
他可能是谁呢？—It may be the headmaster. ——可能是校长。
3. 在回答用指示代词表示人的特殊问句时，常用it指人。
☞—Who’s that? ——那人是谁？—Is it Helen? ——是海伦吗？—Yes, I think you’re right. It’s Helen. ——是的，我想你说对了，是海伦。
三、用于指时间、距离和自然现象等1. 表示时间。
☞—What’s the date? ——今天是几月几日？—It’s the third of March. ——今天是3月3日。
高考英语It的用法
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):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: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 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.指最好的或最渴望得到事物①He thinks he’s it. 他一直以为自己是最佳人选。
高考英语一轮复习 语法专题 第四讲 代词It的用法高三全册英语试题
入舵市安恙阳光实验学校第四讲代词、It的用法一、代词考点透析1．人称代词的主格、宾格，两种物主代词及反身代词。
人称代词的主格在句中作主语，宾格作宾语。
形容词性物主代词作定语，即其后必须有一个名词。
名词性物主代词在句中的作用相当于一个名词，可作主语、宾语、表语等，其后没有名词。
反身代词在主语、宾语、表语后作这些成分的同位语，意为“亲自”、“亲眼”、“某某本人”。
在语法填空中，这个知识点出现的频率相当高。
如：(1)It was John himself that put him in trouble.是约翰本人自找麻烦。
(2)You can believe me.I saw it myself．你可以相信我，我亲眼看见的。
2．one，ones，the one，that，those可以代替前面出现的名词，以避免重复。
one＝ a＋名词单数，the one＝the＋名词单数，that＝the＋名词单数。
ones，those代替前面的名词复数，those ＝the＋名词复数。
one，ones前可以有形容词修饰。
如：(1)I don't like this skirt.I like the red one.我不喜欢这条裙子，我喜欢那条红色的。
(2)I'm planning to buy a house.I'd like one with a garden.我正计划买房子，我想买座带花园的。
(3)The population in Guangzhou is bigger than that in Changsha.广州人口比长沙多。
(4)I prefer the apples in the basket to those in the box.我宁愿要篮子里的苹果，也不愿要那些盒子里的苹果。
3．none，nothing，nobody(no one)的区别。
none既可指人，也可指物，且表特指概念，回答how many，how much等问题；nobody(no one)只能指人，且表泛指概念，常回答who引起的问题；nothing 只能指物，常回答what引起的问题。
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。
高考英语语法之it的用法
2. I hope there are enough glasse for each guest to have ________.(NMET 1995) A.it B.those C.them D.one 解析:答案为D.本题考查替代词it和 one的区别.it用于替代同类的,特定的, 同一的事物;one替代同类的,泛指的 人或物.根据题意"我希望有足够的杯 子使每个客人有一个."可知应用one 泛指enough glasses中的一个.
4)It is no use/ good + doing sth. It is no use trying again = It is of no use to try again. (5)It is + 被强调部分 + that/who + … Was it in the street that you met her? Who was it that called him "comrade"? It was not until yesterday that I met my old friend. It is in a small factory that my brother is going to work.(注意上述各句均为强调句型的"考点") 比较:It is a small factory where my brother is going to work.(定语从句)
(8)作形式宾语. I think it no use arguing with him. I found it very interesting to study English. He made it clear that he was not interested in that subject. (9)用于强调结构. It was Xiaoming whom ( that )I met in the street last night. It was in the street that I met Xiaoming last night. It ws last night that I met Xiaoming in the street.
2011届高考英语第一轮单元考点复习45
Unit 2
重点单词
1．defeat vt.击败，战胜；使落空 n．失败，战败；挫败 【用法拓展】 defeat one’s plan 使计划落空 admit defeat承认失败 invite a defeat 招致失败 defeat an enemy 打败敌人 defeat，conquer，beat，overcome表示“击败”时的区别： defeat 最普通，指获得胜利，尤其指“军事上的胜利”。 conquer 含有决定性的、经常是大规模的胜利的意思。 beat 比较不正式，常作为defeat的对等词语，尽管beat可以 传递更大的强调意义。
They’ve had to cancel tomorrow’s football match because of
the bad weather. 因为天气太糟，他们不得不取消了明天的足球比赛。[剑桥
高阶]
The teacher cancelled a few lines from my composition. 老师把我的作文删去了几行。
The sports meet was postponed on account of rain.
运动会因下雨延期。
即学即用
⑩All flights ________ because of the snowstorm，many passengers could do nothing but take the train. A．had been canceled B．have been canceled C．were canceled D．having been canceled 解析：题意：由于所有航班均因暴风雪而取消，许多乘客 只得改乘火车。逗号前面的部分为独立主格结构，所以必 须用分词结构。 答案：D
高考英语it用法解析及高考真题
2、含有“It is …”的句型 （1）It is time (for sb.) to do sth. It is (high) time that sb. did sth.(虚拟语气) （2）It is + 形容词（+of / for sb.）+ to do
sth. 通常用 of的词有brave、clever、careful、 hopeless、kind、good、naughty、nice、 silly、stupid、foolish、wise等。
（6）It is said/reported/announced/ (well) known … that… （7）It is/was + 时间 + since … 从……已多久了。 It is five months since I arrived in New York.我到纽约 已经五个月了。 It is five months since I was in New York.我离开纽约 已经五个月了。 （注意：终止性动词表示从动作发生时算起；如果 是状态动词或持续性动词，则从动作或状态结束时 算起。）
高考系列
高考英语语法知识点梳理系列
it 用法
1、it的基本用法 （1）用作人称代词，代替前文提到过的事物。 The train has arrived. It arrived half an hour ago. （2）用以代替提示代词this, that。 —What’s this? —It’s a knife. —Whose watch is that? —It’s mine.
（9）It is /was/will be the first/second/third … time that … It is the first time that I have been here. It was the second time that he had seen the film. （10）It is up to sb. to do sth … 应由某人做 某事。 It is up to you to decide whether we start or not.
高中英语语法知识之It的用法总结
高考英语语法知识之It 的用法总结1．It is + 被强调部分 + that ...该句型是强调句型。
将被强调的部分放在前面，其它部分置于that之后。
被强调部分可以是主语，宾语，状语。
强调的主语如果是人，that可以由who换用。
如果把这种句型结构划掉后，应该是一个完整无缺的句子。
这也是判断强调句型与其它从句的方法。
It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father.2．It was not until + 被强调部分 + that ...该句型也是强调句型。
主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是 not ... until ... 的强调形式。
It was not until she took off her dark glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I realize she was a famous film star.= I didn’t realize she was a famous film star until she took off her dark glasses.3．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。
It is very clear that he’s round and tall like a tree.= That he’s round and tall like a tree is very clear.4. It is important ( necessary, right, strange, natural...) that ...由于主句中的形容词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去。
高考英语语法复习 it的用法-强调句型(共25张PPT)
Question form ?
考查强调句型的一般疑问句、特殊疑问句形 式
1．Was it in front of the market _____the road accident happened yesterday? A．where B．that C．which D．why
2．---Was it what he said or something that he did _____ made you cry so sadly， Sarah? ---No，not really． A．which B．that C．when D．what
A．what B．who C．which D．that
6．_____ is it _____ has made you feel so upset?
A．What；that
B．How；which
C．When；what D．Which；as
7．-- When was it _____ the Nanhai No．1，the sunken ship was raised from the seabed?
3．Can it be in the drawer _____ you put your
keys?
A．where B．that C．what D．when
4．Can it be in the restaurant _____ we had dinner
last Sunday ___you left yoБайду номын сангаасr wallet?
Review (self-study )
1. it作人称代词,代替前面提到的事物. 2. it指代时间,季节,距离. 3. it作形式宾语,常用在动词为think , find,
高考英语：it的用法
2）真实主语是主语从句。常见句型如下： a. It + be +名词+主语从句。如：
It is a great pity (that) he can't swim. It was no accident (that) such a book (should) appear in the 18th century. It was a puzzle whether he should get married. It was a mystery how the thieves got in.
from a store kman that Alice bought from a store last week. （强调宾语a walkman）
③It was from a store that Alice bought a Walkman last week. （强调地点状语from a store）
4. 强调句型用于特殊疑问句，被强调的通常 是疑问词。
注意：此强调句型不能强调谓语动词。若需 强调谓语动词，常用“助动词do / does / did + 动词原形”。
四、一些含it的固定句型 As someone puts it, ... 像某人所说的那样，…… Please see to it that ... 请务必…… When it comes to ... 当提到……时 It looks / seems as if ... 看起来好像…… It's time for sth. 该做某事了
高考英语考前玩转高频语法系列-it用法及therebe句型
高考英语考前玩转高频语法系列-it用法及therebe句型【一】代词it【二】引导词it【三】it在强调结构中therebe结构【专项训练】it的用法1、“Doyoulikefish?”“Yes,Ilike.”A、×B、itC、thatD、them2、today?A、HowisitB、WhatisitC、WhatisitlikeD、Howistheweather.3、“Doyouwantawatch?”“.”A、Yes,Iwantit.B、Yes,Iwantone.C、No,I’vegotit.D、No,I’vegotthewatch.4、“Whoseexercise-bookisthat?”“hers”A、ThatisB、ThisisC、It’sD、Its5、won’ttakelongtogettoShanghaibyair.A、ThatB、HeC、ItD、This6、Whathehasdonehelpsusalot,?A、isn’theB、doesn’theC、isn’titD、doesn’tit7、Weallthoughtnousedoingthat.A、itB、thatC、thisD、there8、Itookitforgrantedyouwouldcometoourparty.A、whenB、whyC、forwhatD、that9、Howhappytobeabletostudyandlivetogetherwithyou!A、thatwillbeB、isitC、willitbeD、itwillbe10、Ithoughtittobe.A、himB、heC、itsD、she11、veryfoolishofyoutosayso.A、It’sB、ItsC、That’sD、This12、It’snothishabitforthings.A、asksB、askC、toaskD、asked13、Ithasbeenagreathonourcomingtovisitme.A、theyB、youC、sheD、he14、Ifoundtohearwhathesaid.A、thatdifficultyB、itdifficultyC、thatdifficultD、itdifficult15、Heisfifty,butdoesn’tA、lookatitB、lookforitC、lookitD、lookhim16、Itwaswhotelephonedmeyesterday.A、himB、hisC、himselfD、he17、Thesentenceiswrong.A、itsB、itC、itselfD、it’s18、isnodoubtthathewillsucceedinhisexperiment.A、ItB、ThisC、ThatD、There19、ItseemsJohn’snotcomingafterall.A、thisB、thatC、ifD、to20、wasahandbagthatJohngaveMaryatChristmas.A、ItB、ThisC、ThatD、Such21、Wastheroomthefamouswriterhadeverlivedin?A、that,itB、it,thatC、it,whereD、that,which22、issaidthathehasbeentomanyplacesintheUnitedStates.A、ThisB、HeC、ItD、That23、Whatyouwantmetodo?A、itisB、thatC、isthisD、isitthat24、Isnotimportantwhowillgo?A、itB、thatC、thisD、×25、Whyisiteveryonethinkshe’sathief?A、becauseB、asC、whenD、that26、beingSunday,thelibrarywasclosed.A、WhatB、ItC、ThatD、This27、Isbelievedheisill?A、it,thatB、he,thatC、it,ifD、he,for28、isknowntousMarydancesbest.A、She,×B、It,thatC、It,sheD、She,who29、“What’sthis?”“aflag.”A、ThisisB、That’sC、It’sD、Its30、Jackisill.Haveyouheardabout?A、himB、itC、thisD、thatTherebe结构31、Isatypewriterintheroom?A、heB、thereC、itD、has32、There’snooneinthehouse,is?A、itB、heC、thereD、they33、mustbesomethingwrong.A、ItB、HeC、ThereD、They34、thereanyonearound?A、WasB、WereC、ThereD、Has35、usedtobeachurchroundthecorner.A、HereB、ThereC、ItD、Itis36、Itisreportedthatisgoingtobeastorm.A、itB、thereC、×D、theweather37、Therestillalotofworktobedonebeforethehouseisreadyforoccupation.A、areB、wereC、isD、have38、Thereisagirlforthebus.A、towaitB、waitingC、waitedD、wait39、Thereapinetreeatthetopofthehill.A、standsB、liesC、livesD、has40、willbeagoodfilmonattheRexnextweek.A、ThereB、ItC、ThatD、This改错,以下每句所给的选项中，各有一项为哪一项错的，请指出并改正。
高考英语和法一轮复习——It的用法总结(附答案)
it的用法归纳it既可以用作代词，也可以用作引导词（作形式主语或形式宾语），还可以用来构成强调句型。
一、用作代词——这是it的基本用法。
1. 指事物-----指代上文或刚提到的事物，以避免重复。
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”。
Shanghai is a beautiful city, isn’t it?2. 指人-----指代未知性别的婴儿或身份不明确的人。
----Is this your dog？-----No, it isn’t.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.Someone is knocking at the door. Who can it be?【说明】在答语中，常用来指本人，如说It’s me。
3. 代替某些代词。
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?4. 指抽象事物:It was a great surprise to me when he did a thing like that．You’ve helped me a lot. I shall never forget it.I tried my best to persuade him to give up smoking, but it didn’t help.[辨析] 代词it ,one 和that.（1）it代替的是前面提到的同一名称的同一事物，即同名同物。
高考英语_考点透析：it的用法
考点透析：it的用法一、概述在英语中，it的使用相当广泛，它既可用作代词，如人称代词（personal it）、指示代词（demonstrative it）及非人称代词（impersonal it）, 也可用作引导词（anticipatory it）和强调结构中的强调词（emphatic it）。
Someone is ringing the doorbell. Go and see who it is.有人在按门铃。
去看看是谁。
(人称代词)----What’s this? 这是什么？----It’ s a book. 这是一本书。
（指示代词）What a long way it is from Beijing to London! 从北京到伦敦真远。
（非人称代词）It' s best to plant trees in spring because it's warmer. 春天是植树的最佳时节，因为天气更暖和。
（作引导词）It was I who met him in the park last week. 是我上星期在公园遇到他的。
（强调结构中的强调词）二、it作代词1、用作人称代词（personal it）代替前文提到过的事物，it作真实主语或宾语。
The frog is not a warm-blooded animal. It is a cold-blooded one.青蛙不是温血动物，它是冷血动物。
My pen is missing. I can't find it anywhere. 我的笔丢了，我哪儿也找不到它了。
I won't be back tonight. Please tell my wife about it. 我今晚不回来了，请你向我妻子说一声。
I was disappointed with the film. I had expected it to be much better. 我对这部电影很失望，我曾盼望它更好。
it用法大全讲义-2024届高考英语一轮复习
It相关用法大全一、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：It’s very important to remember this.It’s no use speaking too much without action.It’s unknown when he will come.二、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+宾补+不定式/动名词/从句”。
如：I find it difficult to do the job well.We think it no use complaining.I think it best t hat you should stay here.三．It其它用法2. 其它某些句型或搭配1.It doesn’t matter…没关系It doesn’t matter what he says.他说什么都没关系。
2.It appears/ seems/ happens/says that/as if/as though…It happened that I had no money with me.碰巧我当时没有带钱。
It seemed as though he didn’t recognize me. 他似乎没认出我来。
3.It is said/ reported/ believed/ understood /considered that…It is said that he has joined the Party.据说他已经入党了。
4.It is a waste of time /money doing sth.It’s a waste of time your talking to him.你和他谈是浪费时间。
高考英语语法考点解析：it的用法(附历年真题分析)
高考英语语法考点解析：it的用法（附历年真题分析）历年高考试题，代词it的主要考点主要集中在以下几个方面：不定代词one，that，it；指示代词this，that，these，those，it的用法；强调句型与其他句型的区别。
【2011山东卷24】The two girls are so alike that strangers find_____ difficult to tell one from the other.A. itB. them C, her D. that【答案】A。
【考点】考查固定句型。
【解析】句意：这两个小女孩如此相像，以至于很难辨别出彼此。
此句式it 做形式宾语的结构如下find/make/consider/suppose等+it+adj/n+to do/that….。
【2011北京卷,34】The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase .A. themB. thoseC. itD. that【答案】C【考点】考查代词it的用法。
【解析】句意为“由于当地政府的努力，大城市里的就业率持续升高。
”it代指前面交代过的“the employment rate”，是单数，而them和those是复数。
因此选C。
【2011天津卷,1】We feel our duty to make our country a better place.A. itB. thisC. thatD. one【答案】A【考点】考查代词it的用法。
【解析】句意为“我们觉得将我们的国家变得更好是我们的职责。
”it在此句中充当形式宾语，代指“to make our country a better place”。
因此选A。
【2011山东卷,24】The two girls are so alike that strangers find ________ difficult to tell one from the other.A. itB. themC. herD. that【答案】A【考点】考查it的用法。
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2011届高考英语一轮复习讲解：it的用法【知识要点】It的用法（一）作人称代词1、it代替前面（或后面）的单数名词或分句等所表示的事物。
e.g. You cannot eat your cake but have it.（it代替前面的cake）Although we cannot see it, there is air all around us. （it代替后面的air）They say he has left town, but I don’t believe it.（it代替前面They…town分句中的情况）2、代替有生命但不能或不必分阴阳性的东西（包括婴儿）。
e.g. Yesterday we saw a big tree. It was fully twenty metres high. （it代替前面的tree）The baby cried because it was hungry. （it代替前面的baby）3、在某些习惯说法中，可以代替人。
e.g. ---- Someone is knocking at the door, Peter. ---- Who is it? ---- It’s me.---- Who are singing? ---- It is the children.---- The light is still on in the lab. It must be the third-year students doing the experiment.4、it与one的区别：这两个词都可以代表前面说过的名词，但it用于同名同物的场合；one则用于同名异物的场合。
e.g. ---- Do you still have the bicycle? ---- No, I have sold it.---- Is this knife yours? ---- No. It is Xiao Zhang’s. Mine is the one on the desk.5、it与that的区别：两词都可代替某一特定名词，但that指同一类，并非同一个。
e.g. The climate of South China is mild（温和的）; I like it very much.（it指the climate of South China）The climate of South China is much better than that of Japan.（that指the climate）（二）作无人称代词it作无人称代词时，除了句中找不到它所代表的词语外，另一个特点是它后面的内容都是表示天气、时间、距离、度量衡及情况等。
It is fine (rainy, windy, etc.).It is noon.It is a half hour’s walk to the f actory.It is eighteen square metres in area.What does it matter?（三）作强调词，构成强调结构用以帮助改变句子结构，使句子的某一成分受到强调。
“It is (was) + 所强调的成分+ that (who) + 其它成分。
”在这个句型中，it本身没有词义。
注意: 在强调结构中，如被强调部分为时间状语或地点状语，其后的连接词也绝不能为when 或where，而应用that 。
在复习中，一定要注意句式的不同。
It was in Shanghai that I bought the guitar．(that引起强调句)It was Shanghai where I bought the guitar．(where引起定从)[来源:学§科§网]It was twelve o'clock when we arrived there．(when引起时间状语从句）It was at twelve o'clock that we arrived there．（that 引起强调句）（四）引导词it作形式主语（宾语）为了使句子平衡，常采用形式主语（或宾语）it ，而把真正的主语（或宾语）置于句子后面。
通常引导词it与它所代替的句子成分中间要夹有某些词。
e.g. It takes half an hour to go there on foot.（It与to go there on foot之间夹有takes half an hour四个词）We thought it strange that Mr Smith did not come last night. （it与that从句中间夹有strange）[来源:学&科&网][来源:学。
科。
网]但有时it与所替代部分之间并不夹有其它词。
e.g. You may depend on it that they will support you.（因为介词on之后一般不直接接that引导的宾语从句。
注意：it不是多余的，不能当作错句）（五）. it，one，that 的区别：作为代词，这三个词的对比使用是高考的热点之一。
---Why don't we take a little break? ---Didn't we just have __________?A．it B．that C．one D．thisThe Parkers bought a new house but _________will need a lot of work before they can move in．A．they B．it C．one D．whichone 用以指代同类事物中的任一，that 特指性强，指代可数与不可数词，而it指代上文提过的同一事物。
一、代词it用法例句代替前文提到过的东西或事情，用作人称代词。
This is a new dictionary. I bought it yesterday.这是一本新词学科网典，我昨天买的。
Tom joined the army last mouth. Do you know about it? 汤姆上月入伍了，你知道这事吗？代替指示代词，起着this或that的作用Is this your car? No, it isn’t. 这是你的汽车吗？不是。
What’s that?—It’s a video. 那是什么？它是一台录像机。
Whose room is this?—It is theirs.这是谁的房间，是他们的。
指明某人或某物的身分，还可指不明性别的婴儿Who’s there? It’s me. (It’s John) 谁在那儿？是我。
（是约翰）Go and see who it is that rings. It’s Bill.去看看是谁来的电话，是比尔。
The Greens have a new baby. It’s lovely.格林家有一个新生婴儿。
它很可爱。
指时间，距离，自然现象（天气，气候，明暗）量度，价值等It’s Sunday today. 今天是星期天。
It’s three months since he came here.自从他来到这里，已经三个月了。
How far is it to the Great Wall .到长城有多远？It’s getting dark. 天快黑了。
—How much is the coat? —It’s ninety dollars. 这件衣服多少钱？九十美元。
二、引导词it用法例句[来源:Z xxk. Com ][来源:学*科*网Z*X *X*代替不定式短语It is up to you to decide. 这事要由你决定。
It makes me happy to hear you have recovered.听说你恢复了健康，这使我很高兴。
代替动名词短语It’s no good smoking. 吸烟没有好处。
It’s worthwhile working the whole night on the problem.用整夜的时间来研究那个问题是值得的。
代替主语从句It doesn’t matter what you do. 你干什么都没有关系。
It seems that everyone has known the news.好象大家都知道这个消息。
用法例句K]形式[来源:Zxxk.Com][来源:Z_xx_k.Com]主语形式宾语代替不定式短语I consider it better to be early.我认为能够早一些更好。
We found it impossible to get there before July .我们觉得，要在七月以前到达那里是不可能的。
代替动名词短语We thought it no use doing that.我们认为做那事没有用。
代替宾语从句The teacher makes it clear that everyone should hand in his homework ontime .老师清楚地指出，每个人都应该按时交作业。
三、it在强调结构中强调句型：It is (was) +被强调部分+ that (who) + 其它强调例句说明部分主语It is I who am to blame. 是我该受责怪。
It w as your uncle that (who) came yesterday.昨天来的是你叔叔。
原句的谓语动词如果是现在或将来时态用It is …that(who)如果原句谓语动词是过去时态，则用It was…that(who)。
在宾语It was a new pen that Mother gave me .母亲给我的是一支新钢笔。
强调时间，地点，原因或方式时不要用when, where, how, 必须用that。
地点It was in the classroom that I left my umbrella.我把雨伞就落在了教室里。
状语时间It is at eleven that the train leaves.火车是在十一点钟离开。
方式It was just as he ordered that I acted.我正是照他吩咐的那样做的。
原因It was because he was in trouble that I tried my best to help him.正是因为他处境困难我才尽力帮助他。
宾补It was red that we painted the gate.我们把门油漆成红的颜色。