must not 和need not的区别
<p> <span word="must">must</span> <span word="not">not</span> 和<span word="need">need</span> <span word="not">not</span>这个短语有什么区别?下面让我们详细看一下：</p><p> <span word="must">must</span> <span word="not">not</span>表示禁止，是说话人强有力的劝告或命令，意为&<span word="ldquo">ldquo</span>;一定要，不准。因此，在回答由<span word="must">must</span>引导的问题时，如果是否定的回答，表示&<span word="ldquo">ldquo</span>;不必，没有必要，不能用<span word="mustn">mustn</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span>，而要用<span word="needn">needn</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span>或<span word="don">don</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span> <span word="have">have</span> <span word="to">to</span>.试比较：</p><p> <span word="You">You</span> <span word="must">must</span> <span word="not">not</span> <span word="drive">drive</span> <span word="fast">fast</span>.你不能开快车。(路险或有速度限制)</p><p> <span word="You">You</span> <span word="needn">needn</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span> <span word="drive">drive</span> <span word="fast">fast</span>.(时间充裕)</p><p> <span word="You">You</span> <span word="must">must</span> <span word="not">not</span> <span word="tell">tell</span> <span word="others">others</span>.(警告)</p><p> <span word="You">You</span> <span word="needn">needn</span>&<span word="rsquo">rsquo</span>;<span word="t">t</span> <span word="tell">tell</span> <span word="others">others</span>.(没有必要)</p>
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