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英语
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the boy looked for his toy everywhere,but he couldn't find it.
为什么是find不是found,因为前面是过去式啊looked for
人气:310 ℃ 时间:2019-08-26 04:54:59
解答
因为find是在couldn't的后面.could是can的过去式,couldn't是could not的缩写.
情态动词后面的实义动词要用原形.
could是过去式,在这里就表示出是过去发生的事情了.你回答的很好,再请教下,把couldn't换成doesn't可以吗?不可以。可以把couldn't换成didn't(注意过去时)
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