2017年英语六级阅读语法常识:情态动词的用法
时间:2017-04-01 来源:文都网校 浏览:在2017年上半年英语六级备考中,阅读是很重要的。文都小编提醒大家,在做英语六级练习题之前,了解一些语法常识才会在做阅读题的过程中更好的理解文章大意,更加轻松的突破阅读难关。下面,小编给大家整理了2017年6月英语六级考试语法常识,希望能够帮到大家!
1、情态动词的完成式
1)must have done——表示对过去的事情较有把握
的、肯定性的推测,常译为“一定,准是,肯定”,其否定形式是can’t/couldn’thave done,意为“决不可能,不太可能”。
e.g. Since the ditch is full of water, it must have rained last night.
2)should/ought to have done——表示过去应该做的
却没有做,常含有后悔、责备、埋怨的口吻,意为“本应该”,“应该就好了”; e.g. With all the work finished, I should have gone to your birthday party last night.
3)shouldn’t/ought not to have done——表示过去不该
做的事却给做了,也常含有责备、不满之意,意为“本不该”。
e.g. You shouldn’t have gone back to work yesterday without the doctor’s permission.
4)may/might have done——表示对过去的事情的推
测,但不十分有把握,意为“可能,或许已经”。 e.g. A traffic accident happened yesterday and a driver may have been hurt.
5)could have done——表示过去有可能或有能力做某
事,而实际未做、未能实现的事;有时也表示轻度批评,意为“本来可以,完全可以”。 e.g. The gas leakage could have been avoided if the
gas company took immediate measures after the warning call.
6)needn’t have done——表示过去做了某事,但没有做的必要,意为“其实没有必要”。 e.g. I needn’t have bought all that wine——only three people came.
2、可作情态动词用的短语
would rather, would sooner, would (just) as soon, had rather, had better, had sooner, cannot but, may/might as well
[例1]You all those calculations! We have a computer to do that sort of thing.
A. needn’t have done B. must not have done
C. shouldn’t have done D. can’t have done
[例2]I to him because he phoned me shortly afterwards.
A. ought to have written B. must have written
C. couldn’t have written D. needn’t have written
[例3]You those letters. Why didn’t you
A. should post B. must have posted
C. should have posted D. ought to post
英语六级备考,需要勤学多练!希望各位考生能在考前抓住有效时间进行复习,文都网校四六级频道祝各位六级复习顺利!
文都名师助力2017年6月英语四六级考试通关课程 | |
2017年6月大学英语四级VIP定制班 | 2017年6月大学英语六级VIP定制班 |
编辑推荐
热点聚焦 | 备考交流 |
2016.12英语四级考试真题、答案、解析汇总 | 2016年12月英语四级考试成绩查询 |
2016.12四级考试答案及解析(文都版) | 2017年6月英语六级考试初期备考指南 |
2016.12英语六级考试真题、答案、解析汇总 | 2017.6英语四级30天拿下四级高频词汇 |
2016.12六级级考试答案及解析(文都版) | 2017.6六级备考:30天拿下六级高频词汇 |