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didn't need to do 与needn't have done 的区别和相同点
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推荐答案 2019-05-24
前者是不需要做某事 后者是不应该做某事 重点强调事情做了而且对现在产生了影响
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相似回答
辨析did not need
to
do与needn
't
have
done
答：
1.didn't have to 是表示 “过去这件事情没有必要做”,但是实际上可能做了,也可能没做.如
：I didn’t need to book a ticket in advance. (= I didn’t book)I didn’t need to take a taxi from the airport – there was a bus all the way into the city. (= took the bus）...
didn
‘t need
to
do与 needn
't
have
done
的区别
答：
didn
't need
to
do 过去时 意思： 没必要去做某事 （事情还未做）
needn
't
have
done
一般现在时 意思： 没必要做了某事 （事情已做好）
needn
't
have
done与didn
't need
to
do有何
区别
答：
needn't have done从用法上，是情态动词，didn't need to do是实义动词
。从意义上，needn't have done暗示已经做了，有“本不需要”的意思，didn't need to do暗示还没有做，就是纯粹地“不需要”。
前者是过去将来时，后者是过去完成时
。具体区别如下：例如：I got up early,but I needn’t...
needn
't
have
done和didn
't need
to
do 有什么不同
答：
解释一 didn't need to do
过去时 意思：没必要去做某事 （事情还未做）needn't have done 一般现在时 意思：没必要做了某事
（事情已做好）解释二 didn't have to 是表示 “过去这件事情没有必要做”,但是实际上可能做了,也可能没做.例句：I didn’t need to book a ticket in advance....
needn
't
have
done和didn
't need
to
do 有什么不同
答：
解释一
didn
't need
to
do 过去时 意思： 没必要去做某事 （事情还未做）
needn
't
have
done
一般现在时 意思： 没必要做了某事 （事情已做好）解释二 didn't have to 是表示 “过去这件事情没有必要做”,但是实际上可能做了,也可能没做.例句：I didn’t need to book a ticket in ...
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