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1、2019-2020年高中英语《unit2Grammarandusage》教案牛津版必修4Step1:GeneralintroductionForreference:1.Ifwetalkabouttheabilitysomeonehasnow,weusethemodalverbcan.2.Ifwetalkabouttheabilitysomeonehadinthepast,weusuallyusethemodalverbcould.3.Ifwewanttotalkabouttheabilitysomeonewil
2、lhaveinthefuture,wewillusetheformofthemodalverbwill/shallbeableto.4.Modalverbsshould/oughtto(sometimeshaveto)arealwaysusedtogiveadviceortellsomeonethatheorsheisunderobligationtodosomething.5.Ifwewanttoexpressthatitisnecessaryforustodosomething,modalverbmusti
3、softenused.6.Modelverbsmay/might,can/couldareoftenusedtoaskforpermission.Examples:1.Now,manyofuscanspeakEnglishquitewell,butafewyearsago,wecouldn’t.2.Shallwebeabletobeadmittedthefamousuniversityforfurtherstudyinayear?3.Youshould/oughttolearnenoughknowledgeto
4、servethepeople.4.Everyonepresentatthemeetingmustlookintothemattercarefulandgiveasmuchadviceaspossibleonhowtosolvetheproblem.5.Asastudent,youhavetoobeytherulesoftheschool.6.I’msorryIamlateforclass.May/CanIein?Step2:Practice1.Nowlookattheblackboard,I’dlikeyout
5、oexplainthemeaningsofthedifferentmodalverbsusedinthissentence:Imight/may/could/should/oughtto/will/mustwatchtheTVprogrammetonight.Whenmightisused,itshowsthatthespeakerisuncertainwhetherheorshewilldosomething.Whenmayisused,itshowsthatthespeakerissbitmorecerta
6、inthanwhenmightisused.Couldismorecertainthanmay,butlesscertainthanshouldandoughtto.Shouldandoughttoaremorecertain.Whenweusewill,wemeanwearequitecertainthatwewilldosomething.Ifweusemust,wearealmostcertaintodosomething.2.Ifyouwanttohavealookatyourfriend’sbook,
7、whatdoyousay?(CanIhavealookatyourbook?)Whatdoesyourfriendsaytoyou?(‘Ofcourse,youcan.’Or‘sorry/No,youcan’t)Socanisalsousedtoaskforpermission,especiallyininformalorspokenEnglish.3.NowreadPart1onpage28tofindouthowmodalverbsareusedtotalkaboutability,obligation,c
8、ertaintyandpermission.Payattentiontothethreearrowsthatillustratethedegreesofobligation,certaintyandpermissionwhenmodalverbsareused.4.Readpart2andusemodalverbstomakerequests,suggestionsoroffers,a
