needn+t+have+done

@仲爬2656:为什么是i don't need any help -
宦琪17656195457…… need有两种用法,一种是情态动词,一种是谓语动词.当情态动词时,否定为needn't,搭配为:need do 解释为“必要..” 当谓语动词时,否定为don't need,搭配为:dont need to do 或dont need sth解释为 需要需求 i neednt finish the work...

@仲爬2656:初三英语,这应该是c还是d.must提问不是可以用neednt和 dont have to 吗.这 -
宦琪17656195457…… 选C have to是不得不做某事,need是需要去做某事,两者感情色彩不同

@仲爬2656:Thanks,but you needn ' t have - _____.I bought a new one this morning.A.1.Thanks,but you neednt have - _____.I bought a new one this morning.A.stood B.... - 作业帮
宦琪17656195457…… [答案] C的意思是麻烦,A,站;B,工作;D运行.句意上看只有 C符合 D,held the view后面做同位语,表示什么样的view,同位语用that,后文不完整,主语从句,要用what,表示这本书所说是对的. may前面的句子做从句,前面的句子是完整的,只用that ...

@仲爬2656:we - - - any ice cream. Let's buy some juice instead . -
宦琪17656195457…… 选C 是正确的.首先,根据any只用在否定句和疑问句中排除D.其次, needn't 是情态动词,表示没必要.这句话的意思是不需要,不是没必要,所以排除AB.而且语法角度讲,needn't后面要有实意动词,AB都没有实意动词,排除AB.don't need 不需要.

@仲爬2656:The writer - bookcases a neednt b needs not c doesnt need d isnt needing -
宦琪17656195457…… need可以当情态动词 也可以当实义动词 意思都是需要 但当情态动词时 后必须跟动词 这里后面是 bookcase 名词 所以这里应用的是实义动词 而实义动词否定时 不能在后面直接加not 应把not提前 并加上dose 即doesnot

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