Module4 The natural world Unit 12 Fire --must和mustn't

《Module4 The natural world Unit 12 Fire --must和mustn't》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Module4Unit12Thenaturalworldmust和mustn'tcan/cannotmay/maynotmust/mustnotModalverbs情态动词can/cannot1.表示能力(会)MarycanspeakEnglish,butshecannotspeakFrench.2.表示允许(可以)CanIuseyourdictionary?Ican’tfindmine.3.表示推测(可能)----通常用于否定形式Hecan’tbeintheoffice.Isawhimgooutjustnow.1.S1___Kitty____?

2、S2_____________.CanspellYes,shecan2.S1____Derek________?S2_____________.CansubtractYes,hecanmay/maynot1.表示允许(可以)MayIcomein?2.表示推测(可能)----通常用于肯定形式Shemaybestillwaitingforus.3.表示祝愿Mayyouhaveahappyweekend.may的用法:may/maynot●以may开头的疑问句，其否定回答用can’t或mustn’t。--MayIgohomenow?--Yes,you

3、may.No,youcan’t.maynot的用法:must/mustnot1.must表示必须Youmustdoyourhomeworkfirst.2.must表示一定(肯定性推测)Hemustbeathome.must的用法:must/mustnot1.mustn’t表示禁止(不准；不允许)Youmustn’tsmokehere.2.以must开头的疑问句，其否定回答要用needn’t.--MustIcleantheclassroomnow?--Yes,youmust.No,youneedn’t.mustnot的用法:Whatdothesig

4、nsmean?Doyouknow?Youmustnotcycle.Youmustbecareful.Youmustturnleft.Youmustnotenter.Youmustnotturnright.Youmustnotsmoke.Yes,shecan.Canshecometotheparty?Canshe…No,hecan’t.Hehastostudy.Canheplaythepiano?Canhe…Cantheycometotheparty？No，theycan’t.Theyhavetostudyforthemathtest.Canthe

5、y…Whatmustn’twedo?Wemustn’tplaywiththematches.Wemustbecarefulwithfire.ThankYou!