need “不必做 和“本不必做 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步行回家了.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 [解析] 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 【查看更多】
题目列表(包括答案和解析)
根据汉语完成句子
你不必描述她，我已见过她几次了。
You don’t need to describe her．I ________ ________ ________ ________ ________．
