七年级下学期U6Grammar.ppt
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1、Grammar,A Can and cannot,We can use electricity to make many things.We cannot/cant see electricity.Can you think of an example?Yes,I can./No,I cannot/cant.,Modal verbs,We use can and cannot(cant)to say we are able or unable to do something.,can/cannot are words to show our abilities,can be able to 能
2、,能力 e.g.我可以唱一首英语歌曲。I can/am able to sing an English song.过去式:could e.g.我十年前就能做到那样。I could do that 10 years ago.否定式:cannot=cant could not=couldnt,Peter can speak English.否定 Peter cant/cannot speak English.一般疑问句 Can Peter speak English?(一般疑问句,提前情态动词)特殊疑问句 What can Peter speak?,Hi and Lo are talking ab
3、out themselves.What are they saying?Read their conversation and then complete the statements below with Can or Cannot.,1.Hi _ play football.2.Lo _ paint.3.Hi _ speak as many languages as Lo.4.Both Hi and Lo _ dance.5.Lo _ drive a car,but he _ play chess.6.Hi _ swim,but he _ play the guitar.,can,can,
4、can,can,cannot,cannot,cannot,cannot,May/Can I use your mobile phone?Yes,you may/can.Sure./Certainly.No,you may not/cant.You may/can turn on the TV.You may not/cannot play in the kitchen.,B May and may not,We use may and may not to ask for and give permission(许可).We also use can and cannot(cant)for t
5、he same purpose(目的).,may=can 许可 e.g.你可以睡在这儿。You may sleep here.e.g.May I sit here?(更礼貌)=Can I sit here?Tell difference:e.g.You can smoke here.(口语)=You may smoke here.(礼貌,正式)否定式:may not(无缩写),Daisy is not feeling well today.Benny is at home with her.Read their conversation below.Fill the blanks with m
6、ay or can.,Benny:How are you feeling,Daisy?Daisy:Not very well.Benny:_ I get you a chair?Daisy:Yes,thanks.Benny:Im going out._ I borrow your bicycle,Daisy?Daisy:Yes,you may.Before you go to meet your friends,can you come and see the doctor with me?Benny:Yes.I _._ I carry your bag for you?Daisy:Yes,y
7、ou may.Thats so kind of you,Benny.Im ready to go._ you open the door for me?,May,May,can,Can,May,C Must and must not,We use must and must not(mustnt)to tell people what to do or what not to do.,You must not/mustnt do that,Benny.We must always be careful with electricity.They must not/mustnt play nea
8、r the heater.,After modal verbs such as can,may and must,we use(the base form/the ing form/the ed form)of a verb.,Work out the rule,must=have to 必须 e.g.You must make a plan before doing any work.否定式:must not=mustnt-Must I stay here?-No,you neednt.,Daisy saw a doctor.The doctor told her what to do an
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