过去分词和现在分词的完成被动式作状语时有什么区别 10. ________ many times, he finally understood it.
过去分词和现在分词的完成被动式作状语时有什么区别 10. ________ many times, he finally understood it.
英语人气：151 ℃时间：2019-08-18 23:56:28
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先填空After thought for a many times.he finally understood it.只是时态的区别呀,举个例子The book have been read by me just now after several days' reading.The book had been read by me before when i was...
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