英语语法：It的用法.ppt 46页

英语语法：It的用法英语课件学科网 I.代词ita.用作人称代词,代替前文提到的事物。Mywatchismissing.Ican’tfind(it)anywhere.Herfatherhasgoneabroad.Haveyouheardabout(it)? b.代替指示代词this,that。What’sthis?(It’s)acomputer.Whosepenisthat?It’smine.c.表示时间、天气、距离、季节、明暗等。It’stimeforlunch.It’sgettingwarmerandwarmer． It’sfortyyearssincemyhometownwasliberated.It’ssummernow.Howfarisitfromheretotheairport？It’sabouttwentyminutes’walkfromheretothebusstop.学科网 II.引导词：a.作形式主语,代替由不定式,动名词或从句表示的真正主语。其基本句型为：It(形式主语)+adj.+to+v.It(形式主语)+adj.+that(subject(主语)+v.) It(形式主语)+adj.+whether(subject+v.)Itis＋adj.＋for／sb.todosth.(of)It＋seems(appears)＋that(subject＋v.)happens ①Itisveryimportanttohelpeachother．②Itisnouse/uselessgoingthereagain．③It’snotdecidedyetwhentheywillleaveforShanghai．④Itseemsthathehascaughtacold.=Heseemstohavecaughtacold．学科网 ⑤Is____ possibletomasteraforeignlanguageintwomonths?A.now  B.that  C.it D.man⑥Is____ necessarytotellhisfatherthetruth?A.it B.that   C.what D.he b.作形式宾语,代替由不定式、动名词或从句表示的真正宾语。其主要基本句型为:主语＋谓语＋it(形式宾语)＋宾语补足语＋todosth.(doingsth.或that从句). ①MarxfounditimportanttostudythesituationinRussia.②Shethoughtitnousetowritetohimagain.③Theywanttomakeitcleartothepublicthattheydoanimportantandnecessaryjob.学科网 ④Doyouthink___ difficulttoworkoutthismathsproblem?A.that  B.very  C.yourself D.it⑤Havingbeentheremanytimes,___tofindMr.Wang’shouse.A.itwaseasyforhimB.forhimitwaseasyC.hefounditeasyD.hefoundeasy c.用在强调句型中,为了强调句子的某一成分(通常是主语、宾语或状语),常用结构:Itis/was＋被强调部分＋that(who)….ImetTominthestreetyesterday． ①ItwasIwho(that)metTominthestreetyesterday.②ItwasTomthatImetinthestreetyesterday.③ItwasinthestreetthatImetTomyesterday.④ItwasyesterdaythatImetTominthestreet.主语宾语时间状语地点状语学科网 ⑤____ shehadarrivedhomethatsherememberedherappointment(预约)withthedoctor.A.ItwasnotuntilB.NotuntilitwasC.NotuntilD.Untilitwasnot 1.It___forthisreason___herunclemovedoutofNewYork.A.is...whichB.was...whyC.was...thatD.were...how2.Itwas___hesaidatthemeeting__disappointedme.A.what..,thatB.that..,thatC.what..,whatD.that..,whatDrills 3.---Wasn’titDr.Liwhospoketoyoujustnow?---______.A.Ididn’tknowhewasB.Yes,hedidC.No,hedidn’tD.Yes,hewas4.WasitduringtheSecondWorldWar____hedied?A.thisB.thenC.thatD.while学科网 5.Idon’tthink_____possibletomasteraforeignlanguagewithoutmuchmemorywork.A.thisB.itC.thatD.its6.Does____matterifhecan’tfinishthejobontime?A.itB.thisC.thatD.he 7.Tom’smotherkepttellinghimthatheshouldworkharder,but__didn’thelp.A.heB.whichC.sheD.it8.Was___in1998___yourteachergraduatedfromuniversity?A.that..,thatB.it...whichC.it...thatD.it...when 9.Hefelt___dutytoworkforhumanrightsandprogress.A.ithisB.hisC.thatisaD.thatishis10.___isnogood___withoutdoinganything.A.This...talkingB.It...tospeakC.That...tosayD.It...talking 11.Allthechildrenexceptmypartner___latebecauseoftrafficjam.A.isB.areC.wasD.hasbeen12.Yournewclothesfityou,butmine___me.A.don’tfitB.doesn’tfitC.don’tfitforD.aren’tfit (II)It的用法及强调句型 性质功能例句代词用作人称代词，代替上文提到的人或事物。—Whoisit?—It’sme.You’vehelpedmealot;I’llneverforgetit. 性质功能例句代词用以代替指示代词this或that。—What’sthis?—It’sacomputer．—Whosebookisthat?—It"shers． 性质功能例句代词表示时间、天气、距离、价钱等。It’stimeforlunch．It’sraininghard．It’stwomilesfromtheschooltoourhome． 引导词作形式主语,代替由不定式、动名词或从句等表示的真正主语。Itiseasytobuyanewradio.Itisnousetellinghimthat.Itdoesn’tmatterwhethershecomesornot. 引导词作形式宾语,代替由不定式、动名词或从句等表示的真正宾语。Ifeelitmydutytohelphim.Wethoughtitnousedoingthat.I’vemadeitclearthatnobodyisallowedtosmokehere. 引导词表示强调,其结构是:Itis/was+强调部分+that+原句剩余部分。此结构只限于强调状语、主语和宾语。注意：①如果强调的是人,其后用that或who均可;②如果强调的是物、时间或地点等状语,其后只能用that不用where、when、why。 引导词IsawTomyesterdayhere.①ItwasIthat/whosawTomyesterdayhere．②ItwasTomthat/whoIsawyesterdayhere．③ItwasyesterdaythatIsawTomhere．④ItwasherethatIsawTomyesterday． 引导词注意:若原句是not…until句型,在强调until部分时,要把否定形式放入被强调部分。例如:Hedidn’tleaveuntillreturned.=ItwasnotuntilIreturnedthatheleft． 易与强调句型*若强调谓语,则用do/does/did+动词原形,常译为“的确”“一定”等,该结构只能用于陈述句或祈使句中。引导的强调句与其它从句的区别在于：Dobepatient!(一定要耐心点)HedoeswanttolearnEnglishwell.(他的确想学好英语。)ItwasintheplacethatIwasborn.(强调句)ItwastheplacewhereIwasborn.(定语从句) 混淆的其它从句①强调句型中前后时态应一致;②被强调的部分为主语、宾语和状语,若把itis／was和that／who去掉,剩下的词语能重新组成正确的句子,而且不缺成分,否则就是其它从句。Itwasin1945thatWorldWarIIended.(强调句)Itwas1945whenWorldWarIIended.(定语从句)③ItwasalongtimesinceImetyoulast.(时间状语)Itistimethatyouwenttobed.(定语从句) 口诀：代词it本意它,既可指这又指那;时间天气均可指,谈到距离也用它;假主假宾均可做,强调句型跟that。 1.Itwasthisvillage___Iwasbought.A.whereB.thatC.onwhichD.which2.Itwasinthisvillage___Iwasboughtup.A.whereB.thatC.onwhichD.which 3.Canitbeinthedrawer___youputyourpassport?A.whereB.inwhichC.thereD.that4.ItwasJuly1,1997___sawthereturnofHongKongtothemotherland.A.thatB.whenC.whichD.inwhich 5.Itistwoyears__Ijoinedthearmy.A.beforeB.sinceC.thatD.after6.Itwastwoyears___Ijoinedthearmy.A.beforeB.sinceC.thatD.after 7.---Wasitunderthetree___youwereawaytalkingtoafriend?---Sure.ButwhenIgotbackthere,thebikewasgone.A.thatB.whereC.whichD.while8.---Whydon’twetakealittlebreak?---Didn’twejusthave____?A.itB.thatC.oneD.this 9.Itwasnotuntil1920____regularradiobroadcastbegan.A.whileB.whichC.thatD.since10.___isthefactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It 11.Itwasabout600yearsago___firstclockwithafaceandanhourhandwasmade.A.thatB.untilC.beforeD.when12.Ihate____whenpeopletalkwiththeirmouthsfull.A.itB.thatC.theseD.them 13.ItwasonlywhenIrereadhispoemsrecently____Ibegantoappreciatetheirbeauty.A.untilB.thatC.thenD.so14.Itistheabilitytodothejob____mattersnotwhereyoucomefromorwhatyouare.A.oneB.thatC.whatD.it 15.TheParkersboughtafewhousebut__willneedalotofworkbeforetheycanmovein.A.theyB.itC.oneD.which16.____noneedforustodiscusstheproblemagainsinceithasalreadybeensettled.A.IthasB.TherehasC.ItisD.Thereis 17.Wasitin1969__theAmericanastronautsucceeded___landingonthemoon.A.when;onB.that;onC.when;inD.that;in18.Was___thatIsawlastnightattheconcert?A.ityouB.notyouC.youD.thatyourself 19.____wasin1979___Igraduatedfromtheuniversity.A.That;thatB.It;thatC.That;whenD.It;when20.Whatapitymynewcomputerdoesn’twork!____mustbesomethingwrongwithit.A.ItB.ThereC.ThisD.That 21.Ilike____intheautumnwhentheweatherisclearandbright.A.thisB.thatC.itD.one22.Someoneisknockingatthedoor,butwhocan___be?A.oneB.heC.sheD.it 23.Aknockonthedoormadehimlookup.But___wasonlythemanager.A.thisB.thatC.sheD.it24.Someoneisringingthedoorbell.Goandsee____.A.whoisheB.whoheisC.whoisitD.whoitis 25.Is___necessarytocompletethedesignbeforeNationalDay?A.thisB.thatC.itD.he26.Does___matterifhecan’tfinishthejobontime?A.thisB.thatC.heD.it 27.Itworriedherabit___herhairwasturninggrey.A.whileB.thatC.ifD.for28.Theyhavemade__arule__intheroom.A.this;nottosmokeB.it;smokingC.it;tonotsmokeD.it;nottosmoke