( ) you ever ( ) beijing roast duck before?A,Did try B ,Have tried

问题描述:

( ) you ever ( ) beijing roast duck before?A,Did try B ,Have tried

B

ever 是现在完成时的判断词,结构:主语+ have/ has + 过去分词


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B
ever往往与现在完成时连用.
不明白的再问哟!请记得采纳,多谢!