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

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

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

( ) you ever ( ) beijing roast duck before?A,Did try B ,Have tried
B
ever往往与现在完成时连用.
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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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不明白的再问哟,请及时采纳,多谢!