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theyknowhimintownonthenighttherobberytookplace为什么选tobe,不选havingbeen?

题目详情
they know him___in town on the night the robbery took place
为什么选to be,不选having been?
▼优质解答
答案和解析
know 接复合宾语时一般用to be 不定式作宾补
如:
I know him to be a scientist
=I know that he is a scientist.
They know him to be in town on the night the robbery took place
=They know that he was in town on the night the robbery took place
请在客户端右上角评价点“满意”即可,