It用法练习题及答案
It用法练习题及答案
It 的用法一．单项选择1.Itwasatthegate____hetoldmethenews.A.thatB.whatC.whichD.when2.Is____necessarytotellhisfathereverythingA.itB.thatC.whatD.he3.Wasitinthispalace____thelastemperordied?A.thatB.inwhichC.inwhereD.which4.Is____possibletoflytothemooninaspaceship?A.nowB.manC.thatD.it5.WasitduringtheSecondWorldWar____hedied?A.thatB.whileC.inwhichD.then6.Is____necessarytocompletethedesignbeforeNationalDay?A.thisB.thatC.itD.he7.Idon'tthink____possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.thatC.itsD.it8.Does____matterifhecan'tfinishthejobontime?A.thisB.thatC.heD.it9.Itwasnot____shetookoffherdarkglasses____,Irealizedshewasafamousfilmstar.A.when;thatB.until;thatC.until;whenD.when;then10.Tom‘smotherkepttellinghimthatheshouldworkharder,but____didn ’thelp.A.heB.whichC.sheD.it11.____isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It12.Is________possibletoflytothemooninaspaceship?A．now B．man C．that D．it 13．Ourfoodandservicearebetterthan________usedtobe.A．it B．we C．they D．them14．________appearstome________thereportmustbetruth.A．That;it B．It;that C．It;it D．That;that15．Hefeels________dutytohelpothers.A．thathe B．thathis C．ithe D．ithis16．Take________easy.Theroadsareicy.A．it B．them C．us D．you 17．TheTVsetsmadeinChinaaremuchbetterthan________inJapan.A．that B．those C．them D．It 18．——Haveyoufoundthebikeyoulostyesterday?——Yes,I'vefound________already.A．it B．that C．theone D．thatone19.—— I'mlookingforaflat.1——Wouldyoulike ____with____garden?A．it;the B．it;a C．one;a D．one;the20．________was________whoImetinthemuseumthismorning.A．It;him B．It;he C．That;he D.That;him21．Itwasinthericefields________wehadourLeaguemeeting.A．where B．that C．inwhich D．onwhich22．________youcometothepartysolate?A．Whyisit B．WhyitisC．Whyitisthat D．Whyisitthat 23．——Wereallthreepeopleinthecarinjuredintheaccident——No,___onlythetwopassengers___gothurt．A．theywere;that B．therewas;thatC．itwas;who D．thereare;who24．Idon'tthink________possibletomasteraforeignlanguagewithoutmuchmemorywork. A．this B．that C．its D．it25．Itwasnot________shetookoffherglasses________ Irealizedshewasafamousfilmstar．A.when;thatB.until;that C.until;when D.when;then26.Itwasnotuntil1920____regularradiobroadcastsbegan.A．while B．which C．that D．since27．________isafactthatEnglishisbeingacceptedasaninternationallanguage.A．There B．This C．That D．It28．Itwasabout600yearsago________thefirstclockwithafaceandanhourhandwasmade.A．that B．until C．before D．when 29．ItwasonlywhenIrereadhispoemsrecently____Ibegantoappreciatetheirbeauty.A．until B．that C．then D．So30．Ihate______whenpeopletalkwiththeirmouthsfull.A．it B．that C．these D．them31．——Whydon'twetakealittlebreak? ——Didn'twejusthave________?A．it B．that C．one D．this32.WasitduringtheSecondWorldWar____hedied？(MET88)A．that B．While C．inwhich D．Then33.Is____possibletoflytothemooninaspaceship？(MET88)A．now B．thatC．itD．Man34.Idon'tthink___possibletomasteraforeignlanguagewithoutmuchmemorywork ．(MET90)A．This B．thatC．its D．It35.___isafactthatEnglishisbeingacceptedasaninternationallanguage．(NMET95)A．There B．ThisC．ThatD．It36.Itwasabout600yearsago___thefirstclockwithfaceandanhourhandwasmade ．(NMET97) A．thatB．untilC．before D．when37.____computersplaysuchanimportantpartinourdailylife?A．Whyitisthat B．Whyisitthat2C．WhywasitthatD．Whyisit38. WasitduringtheSecondWorldWar_____hedied?A.thatB.whileC.inwhichD.then39. Is____necessarytotakeoffourshoeswhenweenterthelab?A.everyoneB.thisC.herD.it40. Is____possibletoflytothemooninaspaceship?A.nowB.thatC.itD.man41.Idonhink’tt___possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.thatC.itsD.it42. Sheheardofaterriblenoise,___broughtherheartintohermouth.A.it B.which C.this D.tha t43. Alicereceivedaninvitationfromherboss,____cameasasurprise.A.it B.that C.which D.he44. Does____matterifhecan ’tfinishthejobontime?A.thisB.thatC.heD.it45.Tom’smotherkepttellinghimthatheshouldworkharder,but____didn ’thelp.A.heB.whichC.sheD.it46.Theweatherturnedouttobeverygood,___wasmorethanwecouldexpect.A.whatB.whichC.thatD.it47.____isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It48.Ihopethereareenoughglassesforeachguesttohave_____.A.itB.thoseC.themD.one49.Itwasabout600yearsago___thefirstclockwithafaceandanhourhandwasmade.A.thatB.untilC.beforeD.when50.Ihate____whenpeopletalkwiththeirmouthsfull.A.itB.thatC.theseD.them51.ItwasonlywhenIrereadhispoemsrecently____Ibegantoappreciatetheirbeauty.A.untilB.thatC.thenD.so52.Itistheabilitytodothejob____mattersnotwhereyoucomefromorwhatyouare.A.oneB.thatC.whatD.it53.It____youthat____toblame.A.is;isB.is;areC.are;areD.are;is54.Was_____thatIsawlastnightattheconcert?A.ityouB.notyouC.youD.thatyou55.____electricityplayssuchanimportantpartinourlife?A.WhyisitthatB.WhyisitC.WhyitisthatD.Whyisthat56.Itwas____hesaid_____disappointedme.A.what;whatB.that;thatC.what;thatD.that;what57.Itwasinthelab___wastakenchargeofbyProfessorHarris___theydidtheexperiment.A.which;thatB.that;whatC.whom;thatD.which;where358.Manypeoplenowmake aruletobuycardsfortheirfriendsbeforeChristmas.A.themselvesB.itC.thatD.this59.Someoneisatthedoor,whois ?A.thisB.thatC.itD.he60.—Itisrainingcatsanddogs.—.A.SoitisB.SoisitC.NeitheritisD.Neitherisit二.分析it成分，辨清相似句型。
高考英语语法填空代词it的用法练习题30题
高考英语语法填空代词it的用法练习题30题1.It is important for us to learn English well.A.thatB.thisC.whatD.which答案：A。
本题考查it 作形式主语的用法。
“It is+形容词+for sb to do sth”是固定句型，it 作形式主语，真正的主语是后面的不定式短语“to learn English well”。
选项B“this”、C“what”、D“which”均不能在此处作形式主语。
2.We think it necessary to do exercise every day.A.thatB.thisC.whatD.which答案：A。
本题考查it 作形式宾语的用法。
“think it+形容词+to do sth”是固定句型，it 作形式宾语，真正的宾语是后面的不定式短语“to do exercise every day”。
选项B“this”、C“what”、D“which”均不能在此处作形式宾语。
3.It is said that he is very good at math.A.thatB.thisC.whatD.which答案：A。
本题考查it 作形式主语的用法。
“It is said that+句子”是固定句型，it 作形式主语，真正的主语是后面的that 引导的主语从句。
选项B“this”、C“what”、D“which”均不能在此处作形式主语。
4.We make it a rule to get up early.A.thatB.thisC.whatD.which答案：A。
本题考查it 作形式宾语的用法。
“make it a rule to do sth”是固定句型，it 作形式宾语，真正的宾语是后面的不定式短语“to get up early”。
选项B“this”、C“what”、D“which”均不能在此处作形式宾语。
(完整版)it的用法练习题
it的用法练习题（一）1.It took us over an hour _____________along the street.A. walkB. to walkC. walkingD. walked2.I think it a great honor ________to visit your country.A. to inviteB. invitingC. having invitedD. to be invited3.Many people now make_____________ a rule to buy cards for their friends before Christmas.A. themselvesB. itC. thatD. this4._____is very clear to everyone that he's round and tall like a tree.A. ThisB. WhatC. ThatD. It5.In the United States, bus travel doesn't cost much as train travel,_____________?A. don't theyB. does itC. do theyD. doesn't it6.Someone is at the door, who is_____________?A. thisB. that C .it D. he7.—It is raining cats and dogs.—_____________ .A. So it isB. So is itC. Neither it isD. Neither is it8.—My home is in that tall building over there.—_______________?A. Can it seeB. Can see itC. Can be seen itD. Can it be seen9. _____________raining hard for 3 hours without stopping.A. It isB. It wasC. It has beenD. It had been10.—Has the boy got his bicycle now?—Yes, the police gave_____________.A. him to himB. it to itC. it to himD. him to it11.—Boy,—It is, looks like spring is coming soon.— Yeh, It'll just be a few more weeks.A. it's really a nice day today, isn't it?B. what kind of weather are we going to have today?C. do you think it is going to rain today?D. what' it like outside today?12.It is important _____________their offer.A.rejectB.rejectsC.to rejectD.rejecting13.Has_____________been decided when we are to hold the sports-meeting?A.thatB.thisC.itD.what14.—Did Li Lei call me while I was out?—Yes, it was _____________that called you.A.himB.heC.whoD.whom15.Nothing is wrong with the radio_____________?A.isn't itB.is thatC.is itD.isn't that16.I don't know_____________makes her afraid of having her business discussed.A.what it is about Mary thatB.that is it abut Mary whatC.what is it about Mary thatD.that is about Mary what17.Which sentence is wrong?A.I felt it impossible for him to take the exam.B.I found it impossible that he might take the exam.C.I thought that he might not take the exam.D.In my opinion he might take the exam.18.I don't think _____________difficult for a Chinese student to master a foreign language within five yearsA.thatB.itC.tooD.very19.It's the second time you _____________late this week.A.arriveB.arrivedC.have arrivedD.had arrived20.It will not be_____________we meet again.A.long beforeB.before longC.soon afterD.shortly after21.It's demanded that we_____________there on foot.A.not to goB.don't goC.not goD.won't go22.“It” is often used to _____________a baby.A.mean toB.stick toC.point toD.refer to23.It was not until 1936 _____________basketball became a regular part of the Olympic Games.A.thatB.whenC.whichD.then24.______________you met the Englishman?A.Where it was thatB.Who it was thatC.Where was it thatD.Where was that25._____________that she has gone to the United States?A.Was it trueB.Is it trueC.It is trueD.It was true26._________certain that his invention will lead to the development of production.A.That'sB.This isC.It'sD.What's27.__________in 1914_____________the First World War broke out?A.Was that, thatB.Was that, whenC.Was it. thatD.Was it, when28.It is important that she_____________with Mr Williams immediately.A.speakB.spokeC.will speakD.to speak29.___________that there′s another good harvest this year.A.It saysB.It is said D.It was said D.He was said30.It'll be the first time_____________the play.A.I've watchedB.I'll watchC.I watchD.I would watch31.It's no use_____________over spilt milk.A.cryB.cryingC.that you cryD.for you to cry32.It was great joy _____________he received the news that his long lost son would return homeA.asB.thatC.soD.for参考答案1.B2.D3.B4.D5.B6.C7.A8.D9.C 10.C11.A 12.C 13.C 14.B 15.C 16.A 17.C 18.B 19.C 20.A21.C 22.D 23.A 24.C 25.B 26.C 27.C 28.A 29.B 30.A31.B 32.Bit的用法练习题（二）1. Was it during the Second World War_____ he died?A. thatB. whileC. in whichD. then2. Is ____ necessary to complete the design before National Day?A. thisB. thatC. itD. he3. I don't think ____ possible to master a foreign language without much memory work.A. thisB. thatC. itsD. it4. Does ______ matter if he can't finish the job on time?A.thisB.thatC.heD.it5. It was not _____ she took off her glasses _____ I realized she was a famous film star.A. when, thatB. until, thatC. until, thatD. when, then6. I was disappointed with the film. I had expected ______ to be much better.A.thatB.thisC.oneD.it7. It was not until 1920 ______ regular radio broadcasts began.A.whileB.whichC.thatD.since8. ______is a fact that English is being accepted as an international language.A.ThereB.ThisC.ThatD.It9. It was only when I reread this poems recently _____ I began to appreciate their beauty.A.untilB.thatC.thenD.so10. I hate_____when people talk with their mouths full.A.itB.thatC.theseD.them11. It is the ability to do the job _____ matters not where you come from or what you are.A.oneB.thatC.whatD.it12. I like ___ in the autumn when the weather is clear and bright.A. thisB. thatC. itD. one13. —Do you like ___ here?—Oh, yes. The air, the weather, the way of life. Everything is so nice.A. thisB. TheseC. ThatD. it14. We needed a new cupboard for the kitchen. So Peter made ___ from some wood.A. itB. OneC. HimselfD. another15. The foreign Minister said, " _____ our hope that the two sides will work towards peace."A. This isB. There isC. That isD. It is16. _____ is reported in the newspaper, talks between the two countries are making progress.A. ItB. AsC. ThatD. What17. — How often do you eat out?— ________, but usually once a week.A. Have no ideaB. It dependsC. As usualD. Generally speaking18. We wanted to get home before dark, but it didn't quite _____ as planed.A. make outB. turn outC. go onD. come up19. — What do you want to do next? We have half an hour until the basketball game.—________. Whatever you want to do is fine with me.A. It just dependsB. It's up to youC. All rightD. Glad to hear that20. It was ____ back home after the experiment.A. not until midnight did he goB. until midnight that he didn't goC. not until midnight that he wentD. until midnight when he didn't goKeys:1-5 ACDDB 6-10 DCDBA 11-15 ACDBD 16-20 BBBBC。
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用法练习题及答案
It用法练习题及答案It的用法一．单项选择1.It was at the gate ____ he told me the news.A. thatB. whatC. whichD. when2.Is ____necessary to tell his father everythingA. itB. thatC. whatD. he3.Was it in this palace ____ the last emperor died?A. thatB. in whichC. in whereD. which4.Is ____ possible to fly to the moon in a spaceship?A. nowB. manC. thatD. it5.Was it during the Second World War ____he died?A. thatB. whileC. in whichD. then6.Is ____necessary to complete the design before NationalDay?A. thisB. thatC. itD. he7.I don't think ____possible to master a foreign language without much memory work.A. thisB. thatC. itsD. it8.Does ____matter if he can't finish the job on time?A. thisB. thatC. heD. it9.It was not ____she took off her dark glasses ____ ,I realized she was a famous film star.A. when; thatB. until; thatC. until; whenD. when; then10.Tom‘s mother kept telling him that he should work harder, but ____didn’t help.A. heB. whichC. sheD. it11.____is a fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It12. Is ________ possible to fly to the moon in a spaceship?A．now B．man C．that D．it13．Our food and service are better than ________ used to be.A．it B．we C．they D．them14．________ appears to me ________ the report must be truth.A．That; it B．It; that C．It; it D．That; that15．He feels ________ duty to help others.A．that he B．that his C．it he D．it his16．Take ________ easy. The roads are icy.A．it B．them C．us D．you17．The TV sets made in China are much better than ________ in Japan.A．that B．those C．them D．It18．—— Have you found the bike you lost yesterday?—— Yes, I've found ________ already.A．it B．that C．the one D．that one19.—— I'm looking for a flat.—— Would you like ____ with ____ garden?A．it; the B．it; a C．one; a D．one; the20．________ was ________ who I met in the museum this morning.A．It; him B．It; he C．That; he D. That; him21．It was in the rice fields ________ we had our League meeting.A．where B．that C．in which D．on which22．________ you come to the party so late?A．Why is it B．Why it isC．Why it is that D．Why is it that23．——Were all three people in the car injured in the accident—— No, ___ only the two passengers ___ got hurt．A．they were; that B．there was; thatC．it was; who D．there are; who24．I don' t think ________ possible to master a foreign language without much memory work .A．this B．that C．its D．it25．It was not ________ she took off her glasses ________ I realized she was a famous film star．A. when; thatB. until; thatC. until; whenD. when; then26.It was not until 1920 ____ regular radio broadcasts began.A．while B．which C．that D．since27．________ is a fact that English is being accepted as an international language. A．There B．This C．That D．It 28．It was about 600 years ago ________ the first clock with a face and an hour hand was made.A．that B．until C．before D．when29．It was only when I reread his poems recently ____ I began to appreciate their beauty. A．until B．that C．then D．So 30．I hate ______ when people talk with their mouths full.A．it B．that C．these D．them31．—— Why don't we take a little break? ——Didn't we just have ________ ? A．it B．that C．one D．this32.Was it during the Second World War ____ he died？(MET88)A．that B．While C．in which D．Then33.Is ____ possible to fly to the moon in a spaceship？(MET88)A．now B．that C．it D．Man34.I don't think ___ possible to master a foreign language without much memory work．(MET90)A．This B．that C．its D．It35.___ is a fact that English is being accepted as an international language．(NMET95) A．There B．This C．That D．It36.It was about 600 years ago ___ the first clock with face and an hour hand was made． (NMET97)A．that B．until C．before D．when37.____computers play such an important part in our daily life?A．Why it is that B．Why is it thatC．Why was it that D．Why is it38. Was it during the Second World War _____he died?A. thatB. whileC. in whichD.then39. Is ____ necessary to take off our shoes when we enter the lab?A. everyoneB.thisC.herD.it40. Is ____ possible to fly to the moon in a spaceship?A.nowB.thatD.man41. I don’t t hink ___ possible to master a foreign language without much memory work.A.thisB.thatC.itsD.it42. She heard of a terrible noise, ___ brought her heart into her mouth.A.itB.whichC.thisD.that43. Alice received an invitation from her boss, ____ came as a surprise.A.itB.thatC.whichD.he44. Does ____ matter if he can’t finish the job on time?A.thisB.thatC.heD.it45.Tom’s mother kept telling him that he should work harder, but____ didn’t help.A.heB.whichC.she46.The weather turned out to be very good, ___ was more than we could expect.A.whatB.whichC.thatD.it47.____is a fact that English is being accepted as an international language.A.ThereB.ThisC.ThatD.It48.I hope there are enough glasses for each guest to have _____.A.itB.thoseC.themD.one49.It was about 600 years ago___the first clock with a face and an hour hand was made.A.thatB.untilC.beforeD.when50.I hate ____ when people talk with their mouths full.A.itB.thatC.theseD.them51.It was only when I reread his poems recently____ I began to appreciate their beauty.A.untilB.thatC.thenD.so52.It is the ability to do the job ____ matters not where you come from or what you are.A.oneB.thatC.whatD.it53.It ____ you that ____ to blame.A.is;isB.is; areC.are;areD.are;is54.Was_____that I saw last night at the concert?A.it youB.not youC.youD.that you55.____ electricity plays such an important part in our life?A.Why is it thatB.Why is itC.Why it is thatD.Why is that56.It was ____ he said _____ disappointed me.A.what;whatB.that;thatC.what;thatD.that;what57.It was in the lab ___ was taken charge of by Professor Harris ___ they did the experiment.A.which; thatB.that; whatC.whom; thatD.which; where58.Many people now make a rule to buy cards for their friends before Christmas.A.themselvesB.itC.thatD.this59.Someone is at the door, who is ?A.thisB.thatC.itD.he60.—It is raining cats and dogs.— .A.So it isB.So is itC.Neither it isD.Neither is it二.分析it成分，辨清相似句型。
代词it和one的用法练习题
代词it和one的用法练习题一、选择题1、 I have a pen and I like ＿___ very muchA itB one答案：A解析：it 用来指代前文提到的同一事物，这里指的就是“我拥有的那支笔”，是同一支笔，所以用 it。
2、 I don't have a bike I want to buy ＿___A itB one答案：B解析：one 指代同类事物中的一个，这里说“我没有自行车，想买一辆”，不是特定的某一辆，而是自行车这类东西中的一辆，用 one。
3、 The book is very interesting I'll take ＿___A itB one答案：A解析：这里指的就是前面提到的“这本有趣的书”，是特定的这一本，用 it。
4、 These shoes are too small I need to buy some bigger ＿___A onesB it答案：A解析：ones 指代复数名词，shoes 是复数，这里说“这些鞋子太小了，我需要买些大一点的（鞋子）”，用 ones 来指代“大一点的鞋子”。
5、 I have two cats ＿___ is white and ＿___ is blackA One; the otherB It; the other答案：A解析：onethe other表示“一个……另一个……”，用于两者之间。
这里说“我有两只猫，一只白色，另一只黑色”，用 one 和 the other。
6、 There are many apples on the table You can take ＿___A itB one答案：B解析：“桌子上有很多苹果，你可以拿一个”，不是特定的某个苹果，而是其中的一个，用 one。
7、 The hat you bought is nice I want to buy ＿___ like itA oneB it答案：A解析：“你买的帽子很好看，我想买一个像它那样的”，不是要买你买的那顶，而是类似的一顶，用 one。
(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… 。
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It的用法一．单项选择was at the gate ____ he told me the news.A. thatB. whatC. whichD. when____necessary to tell his father everythingA. itB. thatC. whatD. heit in this palace ____ the last emperor died?A. thatB. in whichC. in whereD. which____ possible to fly to the moon in a spaceship?A. nowB. manC. thatD. itit during the Second World War ____he died?A. thatB. whileC. in whichD. then____necessary to complete the design before National Day?A. thisB. thatC. itD. hedon't think ____possible to master a foreign language without much memory work.A. thisB. thatC. itsD. it____matter if he can't finish the job on time?A. thisB. thatC. heD. itwas not ____she took off her dark glasses ____ ,I realized she was a famous film star.A. when; thatB. until; thatC. until; whenD. when; then‘s mother kept telling him that he should work harder, but ____didn’t help.A. heB. whichC. sheD. ita fact that English is being accepted as an international language.A. ThereB. ThisC. ThatD. It12. Is ________ possible to fly to the moon in a spaceship?A．now B．man C．that D．it13．Our food and service are better than ________ used to be.A．it B．we C．they D．them14．________ appears to me ________ the report must be truth.A．That; it B．It; that C．It; it D．That; that15．He feels ________ duty to help others.A．that he B．that his C．it he D．it his16．Take ________ easy. The roads are icy.A．it B．them C．us D．you17．The TV sets made in China are much better than ________ in Japan.A．that B．those C．them D．It18．—— Have you found the bike you lost yesterday?—— Yes, I've found ________ already.A．it B．that C．the one D．that one19.—— I'm looking for a flat.—— Would you like ____ with ____ garden?A．it; the B．it; a C．one; a D．one; the20．________ was ________ who I met in the museum this morning.A．It; him B．It; he C．That; he D. That; him21．It was in the rice fields ________ we had our League meeting.A．where B．that C．in which D．on which22．________ you come to the party so late?A．Why is it B．Why it isC．Why it is that D．Why is it that23．—— Were all three people in the car injured in the accident—— No, ___ only the two passengers ___ got hurt．A．they were; that B．there was; thatC．it was; who D．there are; who24．I don' t think ________ possible to master a foreign language without much memory work .A．this B．that C．its D．it25．It was not ________ she took off her glasses ________ I realized she was a famous film star．A. when; thatB. until; thatC. until; whenD. when; thenwas not until 1920 ____ regular radio broadcasts began.A．while B．which C．that D．since27．________ is a fact that English is being accepted as an international language. A．There B．This C．That D．It28．It was about 600 years ago ________ the first clock with a face and an hour hand was made.A．that B．until C．before D．when29．It was only when I reread his poems recently ____ I began to appreciate their beauty. A．until B．that C．then D．So30．I hate ______ when people talk with their mouths full.A．it B．that C．these D．them31．—— Why don't we take a little break? —— Didn't we just have ________ ? A．it B．that C．one D．thisit during the Second World War ____ he died？(MET88)A．that B．While C．in which D．Then____ possible to fly to the moon in a spaceship？(MET88)A．now B．that C．it D．Mandon't think ___ possible to master a foreign language without much memory work．(MET90) A．This B．that C．its D．Itis a fact that English is being accepted as an international language．(NMET95) A．There B．This C．That D．Itwas about 600 years ago ___ the first clock with face and an hour hand was made． (NMET97)A．that B．until C．before D．whenplay such an important part in our daily life?A．Why it is that B．Why is it thatC．Why was it that D．Why is it38. Was it during the Second World War _____he died?A. thatB. whileC. in which39. Is ____ necessary to take off our shoes when we enter the lab?A. everyone40. Is ____ possible to fly to the moon in a spaceship?41. I don’t think ___ possible to master a foreign language without much memory work.42. She heard of a terrible noise, ___ brought her heart into her mouth.43. Alice received an invitation from her boss, ____ came as a surprise.44. Does ____ matter if he can’t finish the job on time?’s mother kept telling him that he should work harder, but ____ didn’t help.weather turned out to be very good, ___ was more than we could expect.a fact that English is being accepted as an international language.hope there are enough glasses for each guest to have _____.was about 600 years ago___the first clock with a face and an hour hand was made.hate ____ when people talk with their mouths full.was only when I reread his poems recently____ I began to appreciate their beauty. is the ability to do the job ____ matters not where you come from or what you are.____ you that ____ to blame.;is ; are ;are ;isI saw last night at the concert?you you youelectricity plays such an important part in our life?is it that is it it is that is thatwas ____ he said _____ disappointed me.;what ;that ;that ;whatwas in the lab ___ was taken charge of by Professor Harris ___ they did the experiment. ; that ; what ; that ; wherepeople now make a rule to buy cards for their friends before Christmas. is at the door, who is ?60.—It is raining cats and dogs.— .it is is it it is is it二.分析it成分，辨清相似句型。