【精品】it的用法（可编辑.ppt

it的用法2023/2/2【可编辑】【可编辑】.usedinemphasissentences.usedassubjectinform.usedasobjectinform.usedaspron.Itis/was+被强调部分被强调部分+who/that+其余部分。其余部分。Is/Wasit+被强调部分被强调部分+that/who?wh-(when/where/what)+is/wasitthat+被强调部分被强调部分?wh-(when/where/what)+itis/wasthat+被强调部分被强调部分1.Tom broke the glass in the class yesterday.ItwasTomwhobroketheglassintheclassyesterday.Itwasin the classthatTombroketheglassyesterday.WherewasitthatTombroketheglassyesterday?WasityesterdaythatTombroketheglass?Mr.Wangaskedmewhoitwasthatbroketheglassyesterday.2.It is/was+强调部分who/that+其余部分,反意疑问句反意疑问句ItwasTomwhobroketheglassintheclassyesterday,_?wasntit(1)Was it Bill,_ played basketball very well,_ helped the blind man across the street?(2)Could it be in the meeting room _ you had talked with me last night _ you left behind the keys?(3)It was in the hotel _he stayed _we met.whothatwherethatwherethate.g.(1)Its_herhairisgettinggray_makesherworried.(2)Itsnot_youlosewhatyouhave_youwillrealizeitsvalue.(3)Itisnot_yousaybut_youdo_matters.(4)Itwas_hetookoffhissunglass_Irecognizedhim.5.和其它从句的套考和其它从句的套考thatwhatthatuntilthatafter/when/notuntilthatwhatthat(1)Itwillbetwoyears_wemeetagain.(2)Itsthreeyears_IleftforShanghai.(3)Itstwoyears_Iwasinthearmy.6.混考各种从句混考各种从句(4)Itwas9:oo_hecameback.whenbeforesincesince(3)注意谓语动词的人称和数的一致性注意谓语动词的人称和数的一致性.注意事项：注意事项：(1)如果该结构强调的是人，一般用如果该结构强调的是人，一般用that也也可用可用who来代替来代替that.在强调地点时间及原在强调地点时间及原因时，只能用因时，只能用that,不能用不能用when,wherewhy和和which等词等词.(2)Itis/wasthat句式也可用来句式也可用来强调从句强调从句.eg.ItisMaryandTomwhooften_gooddeeds.do(4)注意语序注意语序(5)注意与各种从句的混考注意与各种从句的混考.（1）Itbeadj.（forsb.）todosth.（2）Itbeadj.ofsb.todosth.Itisillegal（forateenager）todriveacarwithoutalicense.Itskindofyoutohelpmewiththeproblem.1.替代作主语的动词不定式，动名词替代作主语的动词不定式，动名词（3）Itsnogood/usedoingIts（well）worthdoingIts（well）worthoneswhiledoing/todoIts（well）worthwhiledoing/todo2.It替代作主语的从句替代作主语的从句（1）Itis+n.+从句从句e.g.Itisapitythatyouhavemissedthefootballmatch.Itisnosecretthathehasstudiedabroad.(ashame,afact,nowonder,acommonknowledge)e.g.Itisclearthatthechildlikethetoy.Itisobviousthatweregoingtowin.(plain,true,certain,obvious)（2）Itisadj.+that （3）Itisv-edthat=sb/sthisv-edtodoe.g.Itissaidthathehasstudiedabroad.Heissaidtohavestudiedabroad.(reported,proved,believed,arranged,thought)Itisv-edthat（should）e.g.Itissuggestedthatthemeetingshouldbeheldontime.（demand，request，require，order，suggest，advise，recommend)(4)It+v.+thate.g.Itturnsoutthathewasneverthere.(happens,seems,appears)(5)Itmakesnodifferencewhethere.g.Itmakesnodifferencewhetheryougotodayortomorrow.HefeltitanhonorthathewouldhaveachancetocometoChina.Themanagerhasmadeitclearthateveryoneshouldbeontime.IhearditsaidthathehadgonetotheUSA.Ourteachermadeitarulethatweshouldgettoschool10minutesaheadoftime.Itookitforgrantedthattheywerenotcoming.(认为认为理所当然理所当然)Wemustbearitinmindthatweareservantsofpeople.(记住记住)Illseetoitthateverythingisreadyintime.(保证保证)Assomeoneputsit“Practicemakesperfect.”(像某人所说像某人所说)Youcancountonitthatheiscomingforhelp.(指望指望)一些特殊用法一些特殊用法takeitforgrantedbearitinmindseetoitassomeoneputsitcountonitlikeit,dislikeit,hateit,appreciateit+when/ife.g.Theboylikesitwhenhespraisedbeforeguests.Ihateitwhenpeopletalkwiththeirmouthsfull.Illappreciateitifyoucanhelpme.1.It的基本用法是用来指代上文所的基本用法是用来指代上文所提到的事物。如：提到的事物。如：A:Passmeabluepen.B:Hereitis/Hereyouare.2.指代前面的整个句子的内容指代前面的整个句子的内容e.g.Ourteamwonthefootballmatch.Haveyouheardaboutit?3.指代不明身份或性别的人用指代不明身份或性别的人用it；A:Whosit(knockingatthedoor)?B:Itsme.Ididntknowitwasyou.saidtheguard.Thecrowdmoveson.Noonetriestostopit.Lookthatlovelybabyinthecradle!Oh,dear.Itiscrying.1.Itwassevenforty-five_hefinishedthework.A.whenB.thatC.sinceD.before2.Wasitbecauseitsnowedlastnight_hedidntcome?A.whyB.thatC.whenD.which3._isnodoubtthathewillsucceedinhisexperiment.A.ItB.ThisC.ThatD.There4.Itwasnot_shetookoffherdarkglasses_Irealizedshewasafamousfilmstar.A.when;thatB.until;thatC.until;whenD.when;then5.Itistheabilitytodothejob_mattersnotwhereyoucomefromorwhatyouare.A.oneB.thatC.whatD.it6.Itisalmostfiveyears_wesaweachotherlasttime.A.beforeB.sinceC.afterD.when7.Howlongdoyouthinkitwillbe_Chinasendsamannedspaceshiptothemoon?Perhapstwoorthreeyears.A.whenB.untilC.thatD.before9.Itwasbecauseofbadweather_thefootballmatchhadtobeputoff.A.soB.sothatC.whyD.that8.Itwasintheroom_wehadhadadiscussion_Ifoundmywallet.A.where;whenB.that;thatC.where;thatD.that;where 10.Why!Ihavenothingtoconfess._youwantmetosay?A.WhatisitthatB.WhatitisthatC.HowisitthatD.Howitisthat11.-Excuseme,canyoutellmewhereIcanfindasupermarket?-Ihappentoknow_nearby.Comeon,Illshowyoutheway.A.someB.itC.thatD.one12.-Whatdoyouthinkofthefurnitureonexhibition?-Well,great!ButIdontthinkmuchof_youbought.AtheoneBitCthatDwhich1.ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.2.Itwasorderedthatwe(should)arrivethereintwohours.3.ItwasinthestreetthatImetherfather.5.Itisimportantforhertocometotheparty.4.Itwillnotbelongbeforehefinisheshisjob.