冀教五下Unit 4 Lesson 19 Li Ming Comes Home教学课件

LiMingComesHomeUnit4Lesson19,watchTVWhatareyoudoingnow？IamwatchingTVnow.IoftenwatchTVathome.IwatchedTVlastnight.,watchafilmWhatareyoudoing？Iamwatchingafilmnow.Ioftenwatchafilmonsundays.Iwatchedafilmyesterday.,对现在正在做什么提问：Whatareyoudoing？回答：Iamsinginganddancing.对经常做什么提问：Whatdoyouoftendo？回答：Ioftensinganddanceathome.,对过去的时间做什么提问：Whatdidyoudoyesterday？回答：Isanganddancedyesterday.,动词过去式变化规则1对于大部分动词，原型动词+ed即可构成过去式。want—wantedwash—washedplay—playedhelp—helped2对于原型动词词尾有“e”的。直接原型动词+d构成过去式。dance—dancedlove—loved,3“辅+元+辅”结尾，且须重读，双写末尾字母+ed构成过去式。stop—stoppedplan—planned4词尾为“辅音+y”的动词，改“y”为“i”，+edcry—criedstudy—studiedworry—worried,不规则变化有些动词过去式的变化规律不明显，只能通过背诵记忆have—haddo—didsing—sanggo—wentread—readswim—swamrun—randraw—drewfly–fleweat—atesee—sawam/is—wasare—werecome—camebuy—boughtride—rode,Whatareyoudoing？Iamdrawingapicture.Whatdidyoudo？Idrewapicture.Whatdoyouliketodo？Iliketodrawapicture.,Whatareyoudoing？Iamsingingasong.Whatdidyoudo？Isangasonglastnight.Whatdoyouoftendo？Ioftensingasongafterschool.,Whatareyoudoing？Iamdancing.Whatdoyouoftendo？Ioftendanceafterschool.Whatdidyoudo？Idancedlastnight.,Whatareyoudoing？Iamflyingakite.Whatdoyouoftendo？Ioftenfiyingakiteafterschool.Whatdidyoudo？Iflewakiteyesterday.,Whatareyoudoing？Iamridingmybike.Whatdoyouoftendo？Ioftenridemybikeafterschool.Whatdidyoudo？IrodemybikelastSunday.