Inventors have changed the way we live.So they are famous for the great things they___.为什么填did而不是had done呢?
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![Inventors have changed the way we live.So they are famous for the great things they___.为什么填did而不是had done呢?](/uploads/image/z/9543848-32-8.jpg?t=Inventors+have+changed+the+way+we+live.So+they+are+famous+for+the+great+things+they___.%E4%B8%BA%E4%BB%80%E4%B9%88%E5%A1%ABdid%E8%80%8C%E4%B8%8D%E6%98%AFhad+done%E5%91%A2%3F)
Inventors have changed the way we live.So they are famous for the great things they___.为什么填did而不是had done呢?
Inventors have changed the way we live.So they are famous for the great things they___.
为什么填did而不是had done呢?
Inventors have changed the way we live.So they are famous for the great things they___.为什么填did而不是had done呢?
因为前面句子所描述的都是现在的情况,而他们做事情是相对于现在而言的,故应使用一般过去时,所以填did.
如果谈论的是过去某个时间以前发生的动作或事情,就要用过去完成时(had done)了.
没有出现一个过去的时间点,而是相对于are即现在而言
我请教了一个在美国留学的同学 他说都可以啊