高考英语精品同步备课课件 英语 外研版（2019）必修二 Uni2 Using language.pptVIP

*Unit2Let’scelebrate!UsinglanguageModals（2）can/couldmay/mightmustLookatthesentencesfromthereadingpassageandanswerthequestions.aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.01Discoveringtherules1)Whatdothewordsinredindicate:anorder,arequest,abilityorpossibility?Thewordsinredindicatepossibility.v.表明,显示n.请求,要求aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.01Discoveringtherules2)Willthemeaningofsentence(a)changeifwereplace“could”with“must”or“might”?Ifwereplace“could”with“must”,themeaningofsentence(a)willchange.Itmeansthespeakerisquitesureaboutthestatement.Ifwereplace“could”with“might”,themeaningofsentence(a)willremainmoreorlessthesame.“Could”and“might”inaffirmativesentenceshaveasimilarmeaningwhenindicatingpossibility.aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.01Discoveringtherules3)Whathappensifwechange“must”and“might”insentences(b)and(c)into“could”?Ifwechange“must”insentence(b)into“could”,itmeansthespeakerisnotsureaboutthestatement,andit’sonlyapossibility.Ifwechange“might”insentence(c)into“could”,itmeansit’simpossibleforthechildrentoreceivepresents.aThatiswhyLettersfromFatherChristmascouldbetheperfectbook…bThechildrenmusthavebeenveryexcitedastheyopenedit.c…theymightnotreceivetheirpresentsiftheywerenotgood.01DiscoveringtherulesLookformoresentenceswithmodalsinthereadingpassage.