新沪教牛津版英语八下Unit1Help-those-in-need.-Grammar课件

（1）基本形式：to+动词原形（在某些情况下可以不带to）（2）特点：A.没有人称和数的变化C.有时态和语态的变化（被动语态的形式为tobe+动词过去分词）B.可以有自己的宾语和状语动词不定式A、作主语Tolearnaforeignlanguageisnoteasy.Itisgoodothers.帮助他人是件好事。ItisexcitingtheInternet.上网是件令人兴奋的事。tohelptosurf=It’snoteasytolearnaforeignlanguage.动词不定式用法B、作表语Theimportantthingistofinishtheworkontime.Whatyouhavetodonowis(打扫教室)tocleantheclassroom动词不定式C作宾语1)动词+todo常见动词有choose,hope,offer,want,decide,learn,plan,wish,agree,fail等1.Hedecided(buy)thecamera.tobuy2.Iwant(listento)somemusicafterclass.tolistento3.Ihope(travel)allovertheworldoneday.totravel动词不定式2)动词+疑问词+todoIdon’tknowwhattodo.howtodoit/that.(去哪里)(什么时候出发)(选择哪个)WheretogoWhentoleaveWhichonetochoose动词不定式PartAonP7WedecidedtomeetVivientoday.We_______(want/help)helpinsomeway.Whenwearrived,Vivienwasveryhappy.She________(begin/talk)tomeaboutherschool.Shesaid,“I____________(like/go)toschool,butIdon’thaveanyfriends.Ifeellonely.”Mumgavehersomeadvice.ThenMumaskedmetogiveVivienherpresent,butI________(forget/bring)it!Viviensaid,“It’sOK.I__________(hope/see)youagainsoon.”wantedtohelpbegantotalkliketogoforgottobringhopetosee3)动词+it(形式宾语）+宾补+todoIfinditimportanttolearnEnglish我发现很难和他好好相处.我发现在炎热的夏天很容易入睡Ifindithardtogetonwellwithhim.Ifinditeasytofallasleepinhotsummer.动词不定式1)动词+宾语+todoLiMeiaskedmetoshowherthenewdictionary.注：有以上结构的常用动词有tell.wish,ask,wantlike,beg,invite,warn,allow,encourage,advise等。2)动词+宾语+do(不带to的不定式)注：常用的动词是:感官动词see,hear,feel,watch,notice；使役动词have,make,let.动词不定式做宾补answerstoPartB(onP8)2.let…go3.wants…tostay4.want…totake5.teach…topaintE、作状语可以表目的、表结果、表原因F、作定语（必须后置）Icamehere(告诉你一个好消息)totellyouagoodnewsWehavealotofhomeworktodoeveryday.Ihaveagoodnewstotellyou.我们每天有很多作业要做.我有个好消息要告诉你.动词不定式answerstoPartC(onP9)2.toorganize3.totake4.tohelp5.tobringnot+todoMr.Smithaskedtheboy___________(notplay)thiskindofgame.nottoplayPleasetellher__________(notdo)somuchhousework.nottodo动词不定式的否定形式1.Theworkerswantus______togetherwiththem.A.workB.workingC.toworkD.worked2.Thereisn’tanydifferencebetweenthetwo.Ireallydon’tknow_________.A.wheretochooseB.whichtochooseC.tochoosewhatD.tochoosewhich3.Theteachertoldthem____makesomuchnoise.A.don’tB.notC.willnotD.notto4.Hegaveussomeadviceonhow____English.A.learningB.learnedC.tolearnD.learn√√√√5.I’mthirsty.Wouldyoupleasegivemesomething________.A.drunkB.todrinkC.tobedrunkD.fordrinking6.Tomisthefirst_____toschool.A.getB.togetC.gettingD.Got7.Theboywantedtoridehisbicycleinthestreet,buthismothertoldhim______.A.nottoB.nottodoC.notdoitD.donotto8.Isawhim_______outoftheroom.A.goB.hadgoneC.hasgoneD.goes√√√√9.---_______moreabouttomorrow’sweather,call121.---OK,Iwill.Thankyou.A.KnowB.KnowingC.ToknowD.Known10.Wemustdoeverythingwecan____wastewaterfromrunningintorivers.A.keepB.keptC.tokeepD.keeping11.Let’s____playinthestreet.Fathertellsme__doso.A.notto；nottoB.not；nottoC.don’t；tonotD.notto；don’t12.WhenIcameintotheroom,hepretended____hishomework.A.todoB.bedoingC.doingD.tobedoing√√√√