"Did you know if he has\had finish his work?"一句中应是if he has还是had?
Did you know if he has finished his work?
注意：这里if是“是否”的意思
人气：380 ℃ 时间：2020-04-15 13:30:34
解答
用had
这是宾语从句的语法问题,主句为Do you know过去式,从句用过去范围内的某种时态,所以用if he had finished his work（过去完成时）
注：原题有误,应该是finished,had+动词过去分词 是过去完成时的结构
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