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1、Unit1GettingalongwithothersGrammarandusageTo-infinitiveandVerb-ingformasanounks5u精品课件Part1To-infinitiveks5u精品课件1.todoasasubjectThecatsaid,“Totakerollercoasteristerrible”.不定式短语作主语时,可以直接放在句首,但在很多情况下,尤其是在疑问句和感叹句中,往往放在谓语之后,而用先行代词it作形式主语。Thecatsaid,“It’sterribletotakerollercoaster.”Howlongdidittakeyouto
2、takerollercoaster?Howterribleitistotakerollercoaster!ks5u精品课件不定式作主语常见句型:a)Itis+adj.(easy,important,difficult…)+不定式b)Itis+n.(apity,apleasure,one’sduty,ashame…)+不定式c)Ittakes/needs/requires+sometime(hours,months,days,patience…)+不定式Itrequirespatiencetobeagoodteacher.It’smydutytoteachyouhowtobeastudentof
3、NanjingNo.3MiddleSchool.ks5u精品课件2.todoasapredictiveOurmostimportanttasknowistomakeaplan.当句子的主语是aim,idea,policy,question,suggestion,wish,task,duty,job,purpose等或者主语是what引导的名词性从句时,后面可以用不定式做表语,用以说明主语所包含内容。注:作表语的不定式都带to,但当主语部分有实义动词do时,to可以省略。Nowtheonlythingwecandoiswait.ks5u精品课件3.todoasanobjectThecatsaid
4、“Remembernottotakeitnexttime!”(Tips:不定式否定为notto)a)可以直接用不定式作宾语的动词很多,如agree,afford,tend,ask,decide,determine,expect,fail,hope,learn,intend,manage,offer,plan,promise,refuse,want,wish2005年天津卷12题:Idon’twant_____likeI’mspeakingillofanybody,butthemanager’splanisunfair.tosoundB.tobesoundedC.soundingD.tohave
5、soundedks5u精品课件当不定式短语比宾补长时,往往将不定式放到宾补后,而用先行代词it作形式宾语,常用动词有feel,think,find,believe,consider,make等。Thecatfeltitterribletotakerollercoaster.b)只有少数介词如but,except等后面可以跟不定式作宾语。一般情况下作介词宾语的不定式都带to,但如果but或except所在句子里的谓语动词含有do,does,did时,通常省略to。Wehavenochoicebuttowait.Cf.Wecandonothingbutwait.ks5u精品课件4.todoasan
6、objectcomplementYoushouldgetthemtohelpyou.(Theywillhelpyou.)Theybelievedhimtobehonest.(Hewashonest.)(常用谓语动词有:get,ask,force,order,tell,invite,allow,wish,want,like,expect,advise,beg等。)但在谓语动词believe,find,think,feel,consider,suppose,imagine,prove等后面跟tobe…作宾补,不跟todo…ks5u精品课件Thebossmadeherworklonghours.主语
7、谓语宾语宾补She主语wasmade谓语towork主补longhours(byherboss).ks5u精品课件2005全国卷(I)No.18Whilewatchingtelevision,______.A.ThedoorbellrangB.ThedoorbellringsC.WeheardthedoorbellringD.Weheardthedoorbellrings2005福建卷No.23I