对于许多同学来说，英语语法是学习中的一个难点。如果想要提升成绩，打好英语六级语法基础确实很重要。下面为大家分享的“2026年6月英语六级语法：don't need和needn't”，希望能为你的备考提供一些参考和帮助。
2026年6月英语六级语法：don't need和needn't
don't need to do表示： 过去不必做某事, 事实上也没做。.
needn't have done表示： 过去不必做某事, 但事实上做了。
John went to the station with the car to meet Mary, so she didn't need to walk back home. 约翰开车去车站接玛丽，所以她不必步行回家了。
John went to the station with the car to meet Mary, so she needn't have walked back home. 约翰开车去车站接玛丽，所以她本不必步行回家了。 (Mary步行回家，没有遇上John的车。)
典型例题
There was plenty of time. She ___.
A. mustn't have hurried B. couldn't have hurried C. must not hurry D. needn't have hurried
答案D。needn't have done. 意为"本不必"，即已经做了某事，而时实际上不必要。
Mustn't have done 用法不正确，对过去发生的事情进行否定性推断应为couldn't have done, "不可能已经"。 must not do 不可以(用于一般现在时)。
以上是新东方在线英语六级频道为大家整理的“2026年6月英语六级语法：don't need和needn't”学习资料。新东方在线六级频道也将持续带来更多精彩内容，欢迎保持关注。