it的用法总结

it的用法总结和练习①Itisnevertoooldtolearn.活到老，学到老。②Itiseasiersaidthandone.说起来容易做起来难。③Itisnousecryingoverspiltmilk.覆水难收。④Itneverrainsbutitpours.不鸣则已一鸣惊人。一、it的常用固定词组makeit/manageit成功putit达gotit明白goforit努力争取takeit忍受takeiteasy放轻松keepitup继续干comeoffit别吹牛了Don’tmentionit.不用谢；别提了Forgetit.没关系；算了二、it做代词的用法1.Tomhasfailedintheexam.Haveyouheardaboutit?代替前文提到的东西或事情。2.Tomboughtanewhouse,butitneededlotsofworkbeforehemovedin.代替同名同物。3.Whoseroomisthis?Itistheirs.代替指示代词this,that的作用。4.Let’sgotoseewhoitis.指明某人某事的身份或不知男女用it。5.It’sSundaytoday.（date）Itisverycoldtoday.（weather）Itisabout8:30now.（time）It’s5yuan.（value）ItliesinthesouthofShaoguancity.（place）Itis5kilometersfromAtoB.（distance）三、it做形式主语的用法1.It+be+adj+of/for+sb+todosth（用of的形容词bad/brave/careless/clever/cruel/foolish/good（好心的）/honest/horrible/kind/lazy/modest/naughty/nice（有教养的）/polite/rude/silly/stupid/wise/wrong（错误的））2.It+be+adj+that/whether+从句（true/easy/hard/necessary/curious/obvious/likely/possible/probable/good/wonderful/natural/certain/natural/strange/normal/unusual/impossible/pleasant/important）3.It+be+pp（said/reported/believed/supposed/expected/proved/hoped/thought/known/decided/advised/ordered/demanded）+that+从句4.itis/wasapitythat…itis/wasnowonderthat…itis/wasashamethat…itis/wasnosurprisethat…itis/wasanhonorthat…itis/wasagoodthingthat…itis/wasafactthat…5.Itseems/seemedthat/asif…Ithappens/happenedthat/asif…Itappears/appearedthat/asif…6.Ithits/hitsbthat…Itstrikes/strucksbthat…Itoccurstosbthat…Itoccurredtosbthat…7.Itis/wasnousedoingsthItis/wasnogooddoingsthItis/wasuselessdoingsth四、it作形式宾语的用法1.Sb+动词+it+if/when引导的宾语从句（like/dislike/hate/enjoy/love/appreciate）2.6123结构think/make/find/consider/feel/believe3.ItakeitthatyouwillbeleavingforShanghaisoon.认为Therumorhasitthatthemayorwillresigntotaketheresponsibilityforthecrisis.据传Youcancountonitthathewillarriveontime.期待Shewillseetoitthathegoesahead.确保Youcandependonitthattheresultwillbeannounced.五、常用句式。1.强调句型基本结构Itis/was+被强调部分+that(who)+其他部分一般问句Is/Wasit+被强调部分+that+其他部分？特殊问句特殊疑问词+is/was+it+that+其他部分？2.Ittakes/took/willtakesbsometimetodosth3.Itistime/abouttime/hightimethat…Itistimeforsbtodosth;Itistimeforsth/todosth4.Itisadjofsbtodosth;ItisadjforsbtodosthItisuptosbtodosth5.Itisone’sduty/turntodosth6.Itisnouse/nogood/uselessdoingsth7.Itisawasteoftimedoingsth8.Itisconvenientforsbtodosth9.Itislikelythat从句10.Whenitcomestodoingsth/sth11.Itisnowonderthat从句12.It/This/Thatisthebest/worst/mostinteresting+n+that从句从句时态用现在完成时13.It/This/Thatis/wasthe序数词timethat从句时态用现在完成时/过去完成时14.Itwillbe+一段时间+before+从句表示再过多久才……Itwon’tbe+一段时间+before+从句表示用不了多久就……Itwas+一段时间+before+从句表示过了……才……Itwasn’t+一段时间+before+从句表示没过……就……15.Itis/hasbeen+一段时间+since+从句16.Itis/wasnotuntil+被强调部分+that+剩余部分17.Itis/was+时间+when定语从句18.Itisgreatfundoingsth.Itisworthwhiledoing/todosth.六、翻译练习1.要花多年的时间才能掌握一门新的语言。2.我写这封信花了一个小时。（ittakessbsometimetodosth）3.他说那样的话，真是太傻了。（itisfoolishofsbtodosth）4.爬山是费劲的事。（itishardworkdoingsth）5.这里的夏天有时会很热。（itcanbe）6.有人在敲门。一定是邮递员。（therebe;aknockonthedoor;postman）7.得由你来做出选择。（itisuptosbtodosth）8.他打电话时我碰巧不在家。（ithappensthat）9.Ifitwerenotfortheirtimelyhelp,Icouldn’thavegotoverthedifficulties.10.我们认为抱怨是没有用了。（thinkitnousedoing;complain）七、练习1.Istillremembertheaccidentandthetroubles____hascausedtome.2.___iscertainthatshewilldowellinherexam.3.Itisapity____Ican’tgowithyou.4.___nowappearsthattheyareinneedofhelp.5.___hitsmethatIshouldturntomyteacherforhelp.6.___suddenlyoccurredtohimthathehadlefthiskeysintheoffice.7.Ilike___inthefallwhentheweatherisclear.8.Iconsider___agreathonortobeinvitedtoyourparty.9.Hehasmade___clearthathewon’tgiveup.10.ItisthemostinstructivelecturethatI________(attend)sinceIcametothisschool.11.___istwohoursbeforethemedicinetakeseffect.12.Itwasabout600yearsago_____thefirstclockwithafaceandanhourhandwasmade.13.___is3dayssinceIfellill.14.Howlongdoyousuppose___issincehegotthenews?15.___wasyesterdaythatImetTominthepark.16.Was____yesterdaythatyoumetTominthepark?17.Whenwas___thatyoumetTominthepark?18.Myteacherdidn’tknowwhen___wasthatImetTominthepark.19.___isthatheoftenfailsinexamsthatmakeshisparentsworriedabouthim.20.___wasthenewsthathehassucceededthatinspiredthemall.21.Is____theschoolwhereyouoncestudiedthatwillberebuiltwiththehelpoftheProjectHope?22.ItwasnotuntilIfailedintheexam____IrealizedthatIshouldworkhard.23.Itwasinthelibrary____weoftenlearnedbyourselvesthatImetherforthefirsttime.24.Itwas____6o’clockthatIgothomeyesterday.25.Itwas6o’clock_____Igothomeyesterday.26.___isofnoimportancetodosuchathing.27.Itistimethatwe_________(go)toschool.28.___iswellknowntousallthattheearthisround.29.____iswellknowntousall,theearthisround.30.Idon’tthink___possibletomasteraforeignlanguagewithoutmuchmemorywork.31.Does___matterifhecan’tfinishthejobontime?32.____isnoneedforyoutowaithere.33.Wasitthehouse_____AbrahamLincolnwasborn?34.Wasisinthehouse______AbrahamLincolnwasborn?35.Manypeoplenowmake____aruletobuycardsfortheirfriendsbeforeChristmas.八、改错1.TheclimateofSouthChinaismild.Ilikeoneverymuch.2.TheclimateofSouthChinaismuchbetterthanitofJapan.3.Thatremainstobeseenwhetheritwilldousharmorgood.4.Thiswasnotuntilhismothercamebackthathewenttobed.5.Itisdifficultofthemtosettletheproblem.6.Hedidn’tmakeclearwhenandwherethemeetingwouldbeheld.7.Thatisourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.8.I’dappreciateifyouwouldliketoteachmehowtousethecomputer.9.ThedoctoradvisedVerastronglythatsheshouldtakeaholiday,butwhichdidn’thelp.10.ItwasalongtheMissippiRiverwhereMarkTwainspentmuchofhischildhood.11.Youwon’tfinddifficulttogettothecitycenter.12.Iknowthereisnoteasytobeateacher.13.Don’ttakeitgrantedthatothersshouldhelpyou.14.ThisisnotsurprisingthattheSilverGhostwasregardedas“thebestcarintheworld”.15.Itbelievedthattheharderyouwork,thebetterresultyou’llget.16.Doesthatmatteralotwhethershewillcomeherebybusorbytaxi?17.TheTVsetsmadeinChinaaremuchbetterthanitinJapan.18.—I’mlookingforaflat.--Wouldyoulikeitwithagarden?19.—Haveyouwrittenalettertoher?--No,butI’mgoingtowriteittonight.20.Ourfoodandservicearebetterthanitusedtobe.21.ItwasinBeihaiParkthattheymetforthefirsttimethattheoldcoupletoldustheirlovestory.22.Shelookssad.Couldyoupleasetellmewhatthisisthatpreventsherfrombeingashappyasbefore?23.ItwasuntilmothercamebackthatIwenttobed.24.Itwasherthatwonthechampionshipthistime.25.ItisIwhoiswrong.26.ItisMarywhooftenhelpmewithmyEnglish.27.Isitthedictionarythatyouarelooking?28.Itwillbethreeyearssincewegettogetheragain.29.ItistenyearsbeforeMissGaoreturnedtoChina.30.Itwasnotuntil1920whenregularradiobroadcastsbegan.：六、1.Ittakesyearstomasteranewlanguage.2.Ittookmeanhourtowritetheletter./Thelettertookmeanhourtowrite.3.Itwasfoolishofhimtosaysuchathing.4.Itishardworkclimbingmountains.5.Itcanbereallyhothereinsummer.6.Thereisaknockonthedoor.Itmustbeapostman.7.Itisuptoyoutomakeachoice.8.IthappenedthatIwasn’tathomewhenhecalled.9.如果没有他们及时的帮助，我不可能克服这些困难的。10.Wethinkitnousecomplaining.七、1.it2.It3.that4.It5.It6.It7.it8.it9.it10.haveattended11.It12.that13.It14.it15.It16.it17.it18.it19.It20.It21.it22.that23.where24.at25.when26.It27.shouldgo/went28.It29.As30.it31.it32.There33.where34.that35.it八、1.TheclimateofSouthChinaismild.Ilikeitverymuch.2.TheclimateofSouthChinaismuchbetterthanthatofJapan.3.Itremainstobeseenwhetheritwilldousharmorgood.4.Itwasnotuntilhismothercamebackthathewenttobed.5.Itisdifficultforthemtosettletheproblem.6.Hedidn’tmakeitclearwhenandwherethemeetingwouldbeheld.7.Itisourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.8.I’dappreciateitifyouwouldliketoteachmehowtousethecomputer.9.ThedoctoradvisedVerastronglythatsheshouldtakeaholiday,butitdidn’thelp.10.ItwasalongtheMissippiRiverthatMarkTwainspentmuchofhischildhood.11.Youwon’tfinditdifficulttogettothecitycenter.12.Iknowitisnoteasytobeateacher.13.Don’ttakeitforgrantedthatothersshouldhelpyou.14.ItisnotsurprisingthattheSilverGhostwasregardedas“thebestcarintheworld”.15.Itisbelievedthattheharderyouwork,thebetterresultyou’llget.16.Doesitmatteralotwhethershewillcomeherebybusorbytaxi?17.TheTVsetsmadeinChinaaremuchbetterthanthoseinJapan.18.—I’mlookingforaflat.--Wouldyoulikeonewithagarden?19.—Haveyouwrittenalettertoher?--No,butI’mgoingtowriteonetonight.20.Ourfoodandservicearebetterthantheyusedtobe.21.ItwasinBeihaiParkwheretheymetforthefirsttimethattheoldcoupletoldustheirlovestory.22.Shelookssad.Couldyoupleasetellmewhatitisthatpreventsherfrombeingashappyasbefore?23.ItwasnotuntilmothercamebackthatIwenttobed.24.Itwasshethatwonthechampionshipthistime.25.ItisIwhoamwrong.26.ItisMarywhooftenhelpsmewithmyEnglish.27.Isitthedictionarythatyouarelookingfor?28.Itwillbethreeyearsbeforewegettogetheragain.29.ItistenyearssinceMissGaoreturnedtoChina.30.Itwasnotuntil1920thatregularradiobroadcastsbegan.