29.Edward,you play so well.But I( )you played the piano.A.didn’t know B.hadn’t knownC.don’t know D.haven’t known但是为什么不选B?

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29.Edward,you play so well.But I( )you played the piano.A.didn’t know B.hadn’t knownC.don’t know D.haven’t known但是为什么不选B?

29.Edward,you play so well.But I( )you played the piano.A.didn’t know B.hadn’t knownC.don’t know D.haven’t known但是为什么不选B?
29.Edward,you play so well.But I( )you played the piano.
A.didn’t know B.hadn’t known
C.don’t know D.haven’t known
但是为什么不选B?

29.Edward,you play so well.But I( )you played the piano.A.didn’t know B.hadn’t knownC.don’t know D.haven’t known但是为什么不选B?
B是过去完成时,它表示的是过去的过去,而显然我不知道发生在you played the piano之后,是played the piano 在先,我不知道在后而且他们都发生在过去.所以选A

因为前半句是一般时,所以后半句要倒退一个时态也就是过去式。
如果想选B,前半句应该调整为:“played so well”才行哦

因为现在已经在看过爱德华弹钢琴后知道了,在此之前不知道。这是一个很常用的表达方式。

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