----I must start at once,______ I ----No, you _____ A. mustn't; mustn't B. needn't...(选择题)A. mustn't; mustn't B. needn't; mustn't C. mustn't; needn't D. needn''t; needn't请说明为什么.

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----Imuststartatonce,______I----No,you_____A.mustn''t;mustn''tB.needn''t...(选择题)A.mustn''t;mustn''tB.need

----I must start at once,______ I ----No, you _____ A. mustn't; mustn't B. needn't...(选择题)A. mustn't; mustn't B. needn't; mustn't C. mustn't; needn't D. needn''t; needn't请说明为什么.
----I must start at once,______ I ----No, you _____ A. mustn't; mustn't B. needn't...(选择题)
A. mustn't; mustn't B. needn't; mustn't C. mustn't; needn't D. needn''t; needn't
请说明为什么.

----I must start at once,______ I ----No, you _____ A. mustn't; mustn't B. needn't...(选择题)A. mustn't; mustn't B. needn't; mustn't C. mustn't; needn't D. needn''t; needn't请说明为什么.
你好:
选D 首先翻译: 我必须马上开始 , 不是吗(没必要吗:) __ 不, 你没有必要
所以根据题目的意思 第一个空为反义疑问句 而表达的意思是"不是吗(没必要吗:) " 因此为 needn't 后面第二空的意思是 "不, 你没有必要" 这里就更应该用needn't

你好,我个人觉得选,C看翻译:我必须马上开始,是吗?翻译疑问句,must在这儿为必须的意思,如果must表推测意义翻译疑问句才能用need. 后面:不,我不需要。很显然用needn't

选D, mustn't意为“禁止”,needn‘t“不需要” 反义疑问句前肯后否,must"必须"讲时,否定为needn't

你好,选C,陈述句中的must表示“必须”时,附加谓语的谓语动词用mustn’t。回答肯定用need,否定用needn't

needn't只在must的否定回答中出现,故B、D排除;选C

D
mustn't 是禁止的意思用在这里是不恰当的

C