本不必要做某事英文(本不必做某事却做的英语结构)

在生活中，很多人可能想了解和弄清楚need "不必做"和"本不该做"的两个核心考点的相关问题？那么关于本不必要做某事英文的答案我来给大家详细解答下。

didn'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）。

温馨提示：通过以上关于need "不必做"和"本不该做"的两个核心考点内容介绍后，相信大家有新的了解，更希望可以对你有所帮助。