needn't和don't need的区别

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needn't和don't need的区别
we______any chocolates.Let's buy some fruit.
A needn't B needn't to Cdon't need D need
应该选啥米呀?WHY?

C
首先根据题意“我们不需要巧克力了,让我们买些水果吧”,可以把D排除了.
need既可以当成情态动词,又可以当成实义动词.当成情态动词时,need+动词原形,否定形式是need+not+动词原形,当成实义动词时,need+to+do,否定形式是do not need to do.
所以A选项是把他当成情态动词,而情态动词不可以单独做谓语.B选项也是做情态动词,情态动词后面要加动词原形,C选项就是做的实义动词,need后面加名词.

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