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we must do some cleaning now 改否定句 some要变 any吗
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we must do some cleaning now 改否定句 some要变 any吗
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答案和解析
对must的否定有两种:mustn't和needn't,一般情况下应选第二种:
We must do some cleaning now.我们现在必须搞卫生.
------ We needn't do any cleaning now.我们现在不必搞卫生.(明天也可以)比较符合常理
而:
We must do some cleaning now.我们现在必须搞卫生.
------ We mustn't do any cleaning now.我们现在不许(禁止)搞卫生.则不合常理
We must do some cleaning now.我们现在必须搞卫生.
------ We needn't do any cleaning now.我们现在不必搞卫生.(明天也可以)比较符合常理
而:
We must do some cleaning now.我们现在必须搞卫生.
------ We mustn't do any cleaning now.我们现在不许(禁止)搞卫生.则不合常理
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