Inventors have changed the way we live.So they are famous for the great things they___.为什么did?
Inventors have changed the way we live.So they are famous for the great things they___.为什么did?
英语人气:671 ℃时间:2020-03-17 02:36:34
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他们所做的事情,发明都已成为事实,所以用过去.那么为什么不能用had done呢?已经是过去完成时了.过去完成时 一般有两个动作一个过去,一个过去的过去,则是过去完成时态
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