1. don't need 与 needn't 的区别
- needn't = need not. 这里的need是情态动词
- don't need =do not need. 这里已经do这样一个助动词,所以说need在这里是实意动词
前者是没有必要做某事(比较委婉),后者是不需要做,前者的固定搭配是needn't do something后者的固定搭配是 don't need to do something
2. have to 不得不
---------------2020-01-06---------(随缘更新)--------------
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