情态动词+ have +过去分词 （最新版） 编制人：__________________ 审核人：__________________ 审批人：__________________ 编制单位：__________________ 编制时间：____年____月____日 序言 下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢! 并且，本店铺为大家提供各种类型的经典范文，如词性大全、句法大全、句型大全、从句大全、时态大全、语态大全、语法大全、虚拟语气、用法辨析、其他资料等等，想了解不同范文格式和写法，敬请关注! Download tips: This document is carefully compiled by this editor. I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you! In addition, this shop provides you with various types of classic sample essays, such as part of speech, syntax, sentence pattern, clause, tense, voice, grammar, subjunctive, usage analysis, other materials, etc. If you want to know the different formats and writing methods of the model essay, please pay attention! 第 1 页 共 3 页 情态动词+ have +过去分词 1) may(might) have + done sth, can (could) have + done sth 表示过去，推测过去时间里可能发生的事情。 Philip may (might) have been hurt seriously in the car accident. Philip can (could) have been hurt seriously in the car accident. 2) must have +done sth，对过去时间里可能发生的事情的推测，语气较强，具有"肯定"，"谅必"的意思。 ---Linda has gone to work, but her bicycle is still here. ---She must have gone by bus. 3) ought to have done sth, should have done sth 本应该做某事，而事实上并没有做。否定句表示"不该做某事而做了"。 You ought to (should) have been more careful in this experiment. He ought not to have thrown the old clothes away.（事实上已扔了。） ought to 在语气上比should 要强。 4) needn't have done sth 本没必要做某事 I dressed very warmly for the trip, but I needn't have done 第 2 页 共 3 页 本文来源：https://www.wddqw.com/doc/9d8a824732b765ce0508763231126edb6f1a7688.html