GrammarDoyouknowthesesports?Icouldnotrowaboatatfive.NowIcan.rowaboatrideabike...couldnot...now...can...playbadminton...couldnot...now...can...swim/haveaswim...couldnot...now...can...flyakite/kites...couldnot...now...can...A.Using“can”/“could”totalkaboutabilityweuse“can”tosaythatweareabletodosomethingnow.weuse“could”tosaythatwewereabletodosomethinginthepast.e.g.Ican(cannot/can’t/cannot)swim.Whataboutyou?Hecould(couldn’t/couldnot)danceinthepast.Whataboutyou?Whatcantheydo?/Whatcouldtheynotdo?SandySimonMillieDaniel&PeterAmylastyear×××××thisyear√√√√√Lastyear,Sandy_________.Nowshe_______.....Simon...SandySimonMillieDaniel&PeterAmylastyear×××××thisyear√√√√√AskandanswerthequestionsCanSandyrowaboatnow?Yes,shecanCouldSandyrowaboatlastyear?No,shecouldn't.2"can""could"possibilityWhenwewanttoexpresssomethingispossible,weusecan/couldcan/could----present(thepossibility:can>could)2"can""could"-------possibility注意•当委婉表达“请求”“要求”时，用could。而回答时，肯定用can.否定语气一般要婉转，有时可说明不能的原因。如：--Couldyousendthisletterforme?--Yes,Ican./sorry,I’mbusynow.Exercises:Fillinthemwith"could/couldnot""can/cannot".1ItissnowinginCanada.We______goskiingthere.2Theswimmingpooldoesnotopentoday.We________goswimming.3We___________flykitesyesterdaybecauseitrained.4We_______playbadmintonlastFridaybecausewehadourbadmintonrackets.5We________playfootballbecauseSimonforgettobringafootball.cancannotcouldnotcouldcannotTaketurnstoaskandanswerquestionsusing“can”or“could”.Trytomakedialoguesinpairs.1.____youspeakJapanese?2._______youplaythepianolastyear?3._______youcook?4._______youuseacomputerwhenyouwere3?5._______yourideabicyclewhenyouwereveryyounger?CanCouldCanCouldCouldHomework:1Recitenewphrases.2Learntouse"can/could"toshow"ability"/"possibility".3Payattentiontothesentencechange.
