鲁教版七年级下Unit8 Could you please clean your room Section A和Section B课件(57张ppt)
could 表示委婉语气的用法
Could you please +动词原形+…?
Could I +动词原形+…?
(1)在以上两个句型中,could表示委婉的请求或许可,而不是can 的过去式,could 比 can 的语气更加委婉、客气,因此平日里人们更多使用could;否定句直接在动词原形前加not.
例如: Could you please not tell him about it?
(2)在答语中表示允许某人做某事时,用can和may来表达,不能用could或might。
—Could I borrow your dictionary?
—Yes, of course, you____.
A. might B. could C. can
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