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we mustn't buy things we don't need

来源:学生作业帮 编辑:神马作文网作业帮 分类:英语作业 时间:2024/11/13 19:43:54
we mustn't buy things we don't need
我选的是needn't,这又是什么句子啊,那needn't怎么用啊,记得以前老师好像怎么说的
we mustn't buy things we don't need
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.