we mustn't buy things we don't need

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We mustn't buy things we____ A.needn't B.need not C.don't need D.haven't need 这句话为什么不选A~

We mustn't buy things we ____ .

A.needn't B.need not C.don't need D.haven't need

答案:C

译文:我们一定不要买那些我们不需要的东西。

解析:A.needn't 为 不必

C.don't need 为 不需要的

1)不可以。前面一句don't need 其实是don't need to buy的省略。没有必要之意。后面一句是有语境的,可以表示 不需要也可以表示没必要的意思。不可随便替换。
2)是她已经被他们找到了,所以不用去找他们了。
3)就是单纯表示没有必要的意思。
最后加一句,感觉你对情态动词的用法不太清楚。其实英语不要太抠某一个词啊什么的意思了,那样会限制自己对其的理解。好好学习,收获更多吧

你好:
we mustn't buy things we don't need
意思是:我们不可以买我们不需要的东西。
禁止购买我们不需要的东西。
mustn't 表示不行,禁止
needn't 表示不需要。

希望我的回答对您有帮助,祝好!
学习进步哦!
及时采纳,谢谢。

搞不清你到底说的是前面的mustn't,还是后面的don't need。
mustn't在此表示禁止,不可以。needn't表示不必。两者从意思上可以区别。
后面的need是实意动词,意思是需要,否定式为don't need。不能用needn't,need作情态动词主要用于疑问句、否定句,在此意思不合适,要用的话,后面还要有别的实意动词。
(that)we don't need是定语从句修饰things, 关系代词that省略。

你选的needn't 这个否定形式 eed 为情态动词,而 don't need 中 need 是实意动词。要是这题的话 就是 don't need 。 作为实意动词来用。 两种否定形式意思一样,只不过用法不同而已,一个是后面加动词做谓语 ,一个是直接做句子谓语。
不知这么说是不是你想要的


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