(共33张PPT)
21世架教想
Module 11 Way of life
Unit 3
Language in use
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21世架想
Learning objectives
To summarise and consolidate the use of
must,mustn't,need,needn't,can and can't
when talking about customs and social
behaviours
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21世架想
Read the conversation and pay attention to the parts in red.
Nick,you can't cheat(欺骗)friends.
1.What do they mean
2.When should we use them
Thank you for telling
me that,Judy.
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21世架教后
1.You
、must
say Mr or Mrs when
you meet someone for the first time.
2.You
can take it away.
3.You mustn't(not)break anything
4.You needn't(not)wait!
5.You
can
open it!
6.You mustn't (not)do any cleaning
on the first day of the Spring Festival.
世纪软目
21世纪数指
情态动词must,
can,need等
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21世架教后
1,must
must表示“必须，一定要”，
可用于肯定句、否定句和疑问句。
*表示说话者的主观看法，认为有必要或有义务做某事。
*否定形式must not(mustn)表示
“不能”或“禁止”的意思。
例如：
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21世架教后
1)You must use red paper for hongbao
because red means luck.
你必须用红纸做红包，因为红色代表幸运。
2)In my home town,people say you mustn't do
any cleaning on the first day of the Spring Festival
在我的家乡，据说大年初一不能打扫卫生。
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