2018年6月英语四级基础语法知识:情态动词用法

来源:233网校 2018年4月9日
摘要2018年6月英语六级基础语法知识:情态动词用法。>>英语四级名师经验分享>>

  英语六级基础语法知识: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 so. The weather was hot.

  5) would like to have done sth  本打算做某事

  I would like to have read the article, but I was very busy then.


温馨提示:因考试政策、内容不断变化与调整,233网校网站提供的以上信息仅供参考,如有异议,请考生以权威部门公布的内容为准! (责任编辑:233网校)

英语四级题库(1000试题) 233网校客户端
  • 模拟试题1000试题

  • 章节练习1000试题

  • 离线做题不连网,流畅做题

    省流量
  • 历年真题1000试题

一键安装做题累计下载用户:365万+

QQ群:256263252学霸集结,互动交流

一键加群

2018年英语四级精讲班
-教材全面精讲,内容涵盖核心考点,配套练习巩固考点

热门课程
相关推荐
精品课程新用户送600元大礼包

2017年英语四级精品班

课程推广