( ) you please help me?A.Can B Could C May D.Shall

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( ) you please help me?A.Can B Could C May D.Shall

( ) you please help me?A.Can B Could C May D.Shall
( ) you please help me?A.Can B Could C May D.Shall

( ) you please help me?A.Can B Could C May D.Shall
B.could常用于表示较客气委婉的看法、提问及用于虚拟语气的结构中.这时候,could不可以看作是can的过去式,而是could自己独特的用法.如:
Could you speak a little slowly 您能稍微说慢一点儿吗?
本题中也是这种用法.

b

B. could相对于can更委婉,may与I同用,shall与I/we同用