江苏省大丰市万盈二中七年级英语下册《Unit 5 Abilities Grammar I》课件 牛津版.ppt

英语课件 牛津版七年级 7b unit5 grammari whatcanyoudoatpresent whatcouldyoudointhepast 1 icanrideabike 2 ican tgooutaloneatnight 3 icandomanythingsbymyself 1 icoulddressmyselfattwoyearsold 2 icouldnotrideabikewheniwas5 3 icoulddomanythingsonmyown 4 theycouldn tspeakenglishingrade1 whendoweuse can and could a can weareabletodosthnow atpresent could wewereabletodosthinthepast b can could sthispossiblenow atpresent could sthwaspossibleinthepast c can could wecan tusethemtotalkaboutthechancesthatsthwillcertainlyhappeninthefuture d can could couldtalksaboutasmallerchancethancan 总结 情态动词can和could 都能用来表示人拥有的某种能力 意思是 会 能 a can用在一般现在时 而could用在一般过去时 如 icanswimnow buticouldnotswimwheniwasyoung b 在各种句型中要遵守情态动词的一般规则肯定 can could do 动词原形 并且与人称和时态无关 否定 cannot couldnot do can的否定形式是cannot与can t 一般不写成cannot couldnot的缩略形式是couldn t 疑问 can could 主语 do whatcan couldtheydo workthemoutonpage82 1 lastyear sandy nowshe 2 lastyear simon nowhe 3 lastyear millie nowshe can can can couldn trowaboat couldnotrideabike couldnotswim 4 lastyear daniel nowthey 5 lastyear amy nowshe can can couldnotplaytennis couldnotflykites finishofftheconversationinpairs s sandy aboatnow a she s simon abicyclelastyear a he s millie now a she couldn t can row yes can could ride no can swim yes can s danielandpeter badmintonnow a they s you lastyear a i butipracticedveryhardandnowit seasy i teachyou can can play yes can could flykites no couldn t exercises fillinthemwith could couldnot can cannot 1itissnowingincanada we goskiingthere 2theswimmingpooldoesnotopentoday we goswimming 3we flykitesyesterdaybecauseitrained 4we playbadmintonlastfridaybecausewehadourbadmintonrackets 5we playfootballbecausesimonforgettobringafootball can cannot couldnot could cannot isitpossible 1 itissnowingincanada we goskatingthere 2 theswimmingpooldoesnotopentoday we goswimming 3 we flykitesyesterdaybecauseitrained can can t couldn t 4 we playbadmintonlastfridaybecausewehadourbadmintonrackets 5 we playfootballbecausesimonforgottobringafootball could couldn t 都能用来表示事情发生的可能性 意思是 可能 a can用在一般现在时 而could用在一般过去时 如 wecanseeamonkeyshowinthezootoday hecouldnotplayfootballyesterdaybecausehedidn tbringhisboots b 在各种句型中也要遵守情态动词的一般规则 总结 情态动词can和could howpossibleisitforyou trytogiveyouranswers 1 schoolfinishesat4p m thebusleavesat4 10p m we takethebus 2 itwillbewarmtomorrowsowe