高中英语 Module5 Unit1 语法 不定式课件 牛津版必修5

Theinfinitive不定式,本节课重点提要,1.不定式的基本形式和否定形式2.不定式的时态和语态3.不定式的基本用法4.不带to的不定式,Theyadvisedmetogiveupsmoking.Hepromisedtotakecareofthepoorchild.Iwarnthemnottogooutalone.Shedecidednottobelateagain.,不定式的基本形式是由“to+动词原形”构成，其否定形式是nottodo.,笔记要点1,Step1,基本形式和否定形式,请看例句：,Theyinvitedustogotherethissummer.Theyseemedtobetalkingaboutsomethingsecret.Imsorrytohavedonethat.,Step2,(1)不定式的一般形式所表示的动作，通常与谓语的动作（状态）同时发生.Eg.Theyinvitedustogotherethissummer.(2)如果谓语表示的动作（情况）发生时，不定式表示的动作正在进行，这时不定式就要用进行式。Eg.Theyseemedtobetalkingaboutsomethingsecret.(3)如果不定式的动作发生在谓语动词之前，就要用完成式。Eg.Imsorrytohavedonethat.,不定式的时态和语态,笔记要点2,ImverydelightedtobeinvitedtoMarysbirthdayparty.Impleasedtohavebeengiventhischance.,如果不定式的逻辑主语是不定式所表示的动作的承受者，不定式要用被动形式.,笔记要点3,小结,Step3不定式的用法,(1)作主语,eg.1)Itisrighttogiveupsmoking.,不定式短语作主语时，用it作形式主语，真正的主语后置。,(2)作宾语,不定式短语可以作宾语，以下动词后，跟不定式作宾语,eg.1)Hewantedtogo.,agree,decide,expect,fail,help,hope,manage,offer,plan,prepare,pretend,promise,refuse,wish,(构成V.+todo的形式),Ifinditinterestingtoworkwithhim.如果还带有宾语补足语，往往把不定式宾语放在宾语补足语之后，而用it作形式宾语。类似的动词还有()等,(构成主语+V.+it+宾补+todosth.的形式),feel,think,consider,make,believe,(3)作宾语补足语,eg.Heaskedmetodotheworkwithhim.,在feel,hear,listento,lookat,notice,observe,see,watch,have,let,make等词后的补足语中，不定式不带to。但是这些句子如果变成被动结构时，就必须带to。,Eg.Ioftenhearhimsingthesong.,Heisoftenheardtosingthesong.,注意,allow,ask,advise,encourage,expect,forbid,force,get,wouldlike,order,permit,persuade,teach,tell,want,warn,wish,(构成“V.+Sb.+todo”的形式),不定式动词在介词but,except,besides后面时，如果这些介词之前有行为动词do的各种形式，那么，这些介词后的不定式不带to,否则要带to。,Eg.1)Shecoulddonothingbutcry.2)Ihavenochoicebuttogo.,注意,(4)作定语,Eg.Ihavesomebooksforyoutoread.,作定语的不定式如果是不及物动词，不定式后面须有相应的介词。,Eg.Heislookingforaroomtolivein.Thereisnothingtoworryabout.Pleasegivemeaknifetocutwith.,注意,(5)作状语,表示目的、原因、结果,Eg.Icameheretoseeyou.Wewereveryexcitedtohearthenews.Hehurriedtotheschooltofindnobodythere.,(目的),(原因),(结果),目的状语还可以用inorderto或soasto来表示。,Eg.1)Inordertopasstheexam,heworkedveryhard.2)Weranallthewaysoasnottobelate.,(6)作表语。,Eg.Myjobistohelpthepatient.,动词不定式省略to的情况归纳,*1当动词不定式作宾语补足语时，如动词是make,let,have或lookat,see,watch,observe,hear,listento,feel、等，不定式不带to.*2.在下列结构后hadbetter,wouldrather,wouldratherthan,cannotbut（不得不，必然，不能不）,canthelpbut等*3.whynot表建议*4.在介词but,except之后，如果其前有实义动词do的某种形式，不定式不带to,反之须带to.,Step4,ExerciseP9,Competition,GroupA,GroupB.,Thepurposeofnewtechnologiesistomakelifeeasier_itmoredifficult.(MET99)A.notmakeB.nottomakeC.notmakingD.donotmake2.Iveworkedwithchildrenbefore,soIknowwhat_inmynewjob.(MET2000)A.ExpectedB.toexpectC.tobeexpectingD.expects3.Havingatripabroadiscertainlygoodfortheoldcouplesbutitremains_whethertheywillenjoyit.(MET2001)A.toseeB.tobeseenC.seeingD.seen,Practice:,4.CharlesBabbageisgenerallyconsidered_thefirstcomputer.(MET1993)A.toinventB.inventingC.tohaveinventedD.havinginvented5.Allenhadtocallataxibecausetheboxwas_tocarryallthewayhome.(MET2003)A.muchtooheavyB.toomuchheavyC.heavytoomuchD.tooheavymuch,6.Theboywantedtoridehisbicycleinthestreet,buthismothertoldhim_.(MET95)A.nottoB.nottodoC.notdoitD.donotto7.LittleJimshouldlove_tothetheatrethisevening.(MET92)A.tobetakenB.totakeC.beingtakenD.taking8.Therearefivepairs_,butImatalosswhichtobuy.(1999上海高考)A.tobechosenB.tochoosefromC.tochooseD.forchoosing,9._lateintheafternoon,Bobturnedoffthealarm.(2001年北京春季高考)A.TosleepB.SleepingC.SleepD.Havingsleep10.Withalotofdifficultproblems_,thenewly-electedpresidentishavingahardtime.(2002年上海春季高考)A.settledB.settlingC.tosettleD.beingsettled,11.Shewilltelluswhyshefeelssostronglythateachofushasarole_inmakingtheearthabetterplacetolive.(2003上海春季高考)A.tohaveplayedB.toplayC.tobeplayedD.tobeplaying12.Inordertogainabiggershareintheinternationalmarket,manystateruncompaniesaretrying_theirproductsmorecompetitive.(2002上海春季高考)A.tomak