don't need 和 needn't 有什么区别?

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don''tneed和needn''t有什么区别?don''tneed和needn''t有什么区别?don''tneed和needn''t有什么区别?needn''tneed在这里是情态动词,不必要.做MUST的否

don't need 和 needn't 有什么区别?
don't need 和 needn't 有什么区别?

don't need 和 needn't 有什么区别?
needn't
need在这里是情态动词,不必要.做MUST的否定句时用.
例如:MUST YOU GO WITH HIM?
NO,I NEED NOT.
翻译:你必须跟他去吗?
不,我不必.
don't need
need 在这里是实意动词,不需要
例如:DO YOU NEED A PEN?
NO.I DON'T NEED.I HAVE A BALLPEN WITH ME.
翻译:你需要钢笔吗?
不,不需要.我身上有只圆珠笔.

一样的意思啊 ,只是后面的是缩写

没有区别

needn't中need是情态动词,后面接动词原型.
You needn't do that.
don't need后面要接不定式.
You don't need to do that.

need是不需要,作动词,而needn't是不允许,做情态动词