Unit 4 Scientists who changed the world Grammar and Usage 课件-高中英语译林版（2020）必修第三册.pptx

DonePastParticiple过去分词

Youcanhavefooddeliveredtoyouusingfooddeliveryappsandsites.(p31互联网无疆世界)非谓语使用条件：①有且仅有一个单句（无连词）②句子中已经有谓语动词。其他的动词则要使用非谓语形式。（todo/doing/done）被动主动/伴随review

1.Tofinishtheworkontimeisdifficult.2.Herefusedtohelpme.3.Ourparentsexpectustogotoagooduniversity.4.Heisalwaysthefirsttocome.5.Hegotupearlytocatchthefirstbus.6.Iamhappytoseeyou.7.Hehurriedtothestationonlytofindthebushadgone.8.Mydreamistogotoagooduniversity.todo不定式可以做：主、宾、表、定、状、补review

Walkingisagoodformofexerciseforboththeyoungandtheold.Weenjoyswimmingverymuchbecauseitisgoodforourhealth.Thereisareadingroom.Myhobbyisplayingping-pong.Don’tleaveherwaitingoutsideintherain.Hearingthebadnews,theycouldn’thelpcryingDoing可以做：主、宾、定、表、补、状review

非谓语Doing动名词主动Doing现在分词进行Todo/do目的将来Done过去分词被动完成定表状补主宾表定主宾表定状补定表状补review

主动意义被动（bedone）意义过去一般式分词完成式否定式done被动完成Done过去分词的形式Notdone否定被动完成

定表状补

Thepollutedriverisbecomingclean.这条被污染的河流变得清澈了。Therearemanyfallenleavesontheground.地上有许多掉落的叶子。Thereisnofoodleftonthetable.桌子上没有被剩下的食物。Theroom?cleanedyesterday?willbeused?asabedroom.被打扫的房间会被当做卧室。Themeeting,attendedbyonethousandstudents,wasagreatsuccess.被一千名学生参加的会议非常成功。被动被动被动被动完成

Thepollutedriverisbecomingclean.Therearemanyfallenleavesontheground.Thereisnofoodleftonthetable.Theroom?cleanedyesterday?willbeused?asabedroom.Themeeting,attendedbyonethousandstudents,wasagreatsuccess.=Theriverwhichwaspollutedisbecomingclean.=Therearemanyleaveswhichhavefallenontheground.=Thereisnofoodwhichwasleftonthetable.=Theroomwhichwascleanedyesterdaywillbeusedasabedroom.=Themeetingwhichwasattendedby1,000students,wasagreatsuccess.被动被动被动被动完成

有些过去分词已转化成形容词，表示“感到……的”，通常用来描述人的感受。常用的此类词有：excited,ama