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题目
英语中何时使用wouldn,t have done shouldn,t have done couldn,t have done needn,t have done
wouldn have done shouldn have done could have done needn have done 呢

提问时间:2020-10-19

答案
wouldn't have done 是指'不会这么做' 一般用在一种假设的情况下 比如'如果我知道就不会这么做了'之类的shouldn't have done指'不应该这么做' 一般用在做了一件事然后表示后悔或者指出错误 像是'这件事不应该这么做'...
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