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1、Book5Unit3LifeinthefutureYulinMiddleSchoolLeesaLiuGrammar高二必修5Unit3过去分词（PastParticiple）WhatisthePastParticiple?2.WhatarethedifferencesbetweenthePastParticiple(V-ed)andthePresentParticiple(V-ing)?3.HowtousethePastParticipleastheAdverbial?过去分词是（）的一种形式,表
2、示（）和（）的动作。它在句子中可以充当：（）等成分。过去分词完成被动非谓语动词定语、表语、宾补、和状语观察下列的句子:(Whenhisworkswaspublished)=Whenpublished,hisworkbecamefamousfortheabsenceofrhymeattheendofeachline.PP作时间状语,相当于一个时间状语从句有时过去分词前可加连词when或while来强调时间概念。过去分词作时间状语1.Whenitisheated,icewillbechangedint
3、owater.Whenheated,icewillbechangedintowater.相当于时间状语从句，有时为了突出时间，可在分词前加when或while。2.Whenitisseenunderamicroscope,afreshsnowflakehasadelicatesix-pointed.Seenunderamicroscope,afreshsnowflakehasadelicatesix-pointedshape.过去分词作原因状语1.Since/Asshewasgivenadvice
4、bythefamousdetective,theyoungladywasnolongerafraid.Givenadvicebythefamousdetective,theyoungladywasnolongerafraid.相当于表示原因的状语从句。2.Becauseitwasdoneinahurry,hishomeworkwasfullofmistakes.Doneinahurry,hishomeworkwasfullofmistakes.过去分词作条件或者假设状语Iftheyhadbeeng
5、ivenmoreattention,thecabbagescouldhavegrownbetter.Givenmoreattention,thecabbagescouldhavegrownbetter.前面可带if，unless等从属连词，相当于条件状语从句。2.IfIamcomparedwithyou,westillhavealongwaytogo.Comparedwithyou,westillhavealongwaytogo.作方式或伴随情况状语Thehunterlefthishouse,fo
6、llowedbyhisdog.Thehunterlefthishouse,andhewasfollowedbyhisdog.没有相当的状语从句可以代替。2.Shesatbythewindow,lostinthought.Shesatbythewindow,andshewaslostinthought.lost表示一种迷失心理状态1)过去分词在句子中可以作时间状语、原因状语、伴随状语、条件状语和让步状语等,相当于一个完整的状语从句。2)过去分词作状语时,过去分词的逻辑主语与句子主语一致。Summar
7、y用过去分词作状语来改写句子。AsIwasworriedaboutthejourney,Iwasunsettledforthefirstfewdays.→_______________________,Iwasunsettledforthefirstfewdays.Worriedaboutthejourney2.Ifheisgiventime,he’llmakeafirst-classtennisplayer.→__________,he’llmakeafirst-classtennisplaye
8、r.3)AsIwasconfusedbythenewsurroundings,Iwashitbythelackoffreshair.→______________________________,Iwashitbythelackoffreshair.GiventimeConfusedbythenewsurroundings4)Whenhewasquestionedbythepoliceaboutthefire,hebecametense.→_____________________
