I _ you__ in London .how long have you been here?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/12 16:09:38

I ___ you____ in London .how long have you been here?
A don't know ,were
B hadn't known ,are
C havn't known ,are
D didn't know ,were
这类题总是做错

这个选 D 这跟虚拟语气没半点联系希望楼上的朋友不要乱说
为帮助理解可以看成是一个对话
A:I didn't know you were in London.how long have you been here?
B：.
这里用过去时是因为在A 说话之前 A 不知道B 去了伦敦是在这个动作之前
有一个时间点
这属于口语交际中的简单语法问题

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