关于英语句子（mustn't）All the students must wear uniforms in late November.(改为否定句）改为1.All the students mustn't wear uniforms in late November.2.All the students needn't wear uniforms in late November.那一句对?

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关于英语句子（mustn't）All the students must wear uniforms in late November.(改为否定句）改为1.All the students mustn't wear uniforms in late November.2.All the students needn't wear uniforms in late November.那一句对?
关于英语句子（mustn't）
All the students must wear uniforms in late November.(改为否定句）
改为1.All the students mustn't wear uniforms in late November.
2.All the students needn't wear uniforms in late November.
那一句对?

关于英语句子（mustn't）All the students must wear uniforms in late November.(改为否定句）改为1.All the students mustn't wear uniforms in late November.2.All the students needn't wear uniforms in late November.那一句对?
第二句,你要从must表示的意思来理解,原句里边,must表示必须的意思
后面2个句子,第一个mustn't 是禁止的意思
第二个needn't是不需要的意思
从语义来理解,应该用第二句.
也许老师会从情态动词的否定式开讲这个知识点,语义来理解更简单直接一些,也不容易错.

选2
must的否定形式就是needn`t.
needn`t是不必
mustn't是禁止,不允许

2对。
must 作义务，必须解时的否定形式，用needn't

第二句对。
2.All the students needn't wear uniforms in late November
对
must :1. 必须2. 必然要, 必定会3. (做出逻辑推断)4. (表示坚持)n.
1. 必须做的事, 必不可少的事物vt. & vi.
1. （表示必要或很重要）必须2. （提出建议）应该，得 3. （表示很可能...

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第二句对。
2.All the students needn't wear uniforms in late November
对
must :1. 必须2. 必然要, 必定会3. (做出逻辑推断)4. (表示坚持)n.
1. 必须做的事, 必不可少的事物vt. & vi.
1. （表示必要或很重要）必须2. （提出建议）应该，得 3. （表示很可能或符合逻辑）一定
mustn`t 意思是“不准”
所以must 的否定要换位： needn`t 和don`t have to

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选 【2】
must的否定就是needn't
没有mustn't 这个说法，记住就可以了

2正确
原句是说“必须”，改为否定是“不必须”，也就是“不需要”，即needn't.

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