问题
选择题
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
答案
答案:A
A。根据句意可知,说话者是“过去”不知道,现在已经知道了,因此句子用一般过去时。句意为:爱德华,你弹得太好了。但我之前不知道你会弹钢琴。又如:Hello! I didn’t know you were in London. How long have you been here? 你好! 我之前不知道你在伦敦。你在这里多久了?