Unit+2+Natural+Disasters+Grammar+and+usage+非谓语动词讲解高中英语译林版（2020）必修第三册.pptx

一个句子当中，已经存在一个谓语动词,又没有连词的情况下,还有别的动词出现时，就需要使用非谓语动词。todo不定式动名词分词doing-ed-ingNon-finiteverb

主语宾语表语定语状语补语tododoing-ed/-ing

01不定式todo做主语1)ToknowsomethingaboutEnglishisonething;toknowEnglishisquiteanother.2)Whenandwheretoholdthemeetingisnotknownyet.3)It‘simportanttolearnaforeignlanguage.

Itis+adj.(easy,difficult,important…)forsb.todosth.Itis+n.(apity,apleasure,one’sduty,ashame…)todosthItis+adj.(kind,nice,generous)ofsb.todosth.(形容人的品质)Ittakes/needs/requires(sb)sometime/hours/months/days/patiencetodosth01不定式todo做主语

主语宾语表语定语状语补语tododoing-ed/-ing

02不定式todo做宾语动词不定式作动词宾语Ihavedecidedtostudyengineering.Idon’twanttogoshopping.wishhopeofferdecidetendarrangepromiserefusepretendexpectdareplanagreemanagepreparedesiredeterminefailaffordprefer总结：常用不定式作宾语的动词有：

主语宾语表语定语状语补语tododoing-ed/-ing

03不定式todo做表语当句子的主语是aim/purpose/intention/plan/wish/decision/choice/job/task/duty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。Herwishisalawyer.Yourtasktodayisthecurtains.Sheisnextweek.Whattheoldmanlikesistowatchchildrenplay.tobecometowashtoreturn

主语宾语表语定语状语补语tododoing-ed/-ing

04不定式todo做定语ThetraintoarriveisfromAustralia.MarieCuriewasthefirstpersontoreceiveNobelPrizes.Hehasnotkepthispromisetowritetohisparentsregularly.Threeyearslater,hehadachancetogotoAustralia.不定式做后置定语：(1)表示将来的动作(要做）(2)序数词,形容词最高级或被only,last,next等修饰的名词用不定式作定语。(3)同源词可以带不定式的名词后用不定式修饰，如attempt,decision,promise,plan,ability,determination,anxiety,eagerness等(4)用于抽象名词wish,chance;idea;belief;way;moment;time后

04不定式todo做定语Ineedapieceofpaper_____________(write).Thereisnothingtoworry______.Pleasesgivemeaknifetocut_______.不定式做后置定语：如果不定式是不及物动词，后面就应有必要的介词,不能省略。towrite