1) may have + done sth, can have + done sth 表示过去,推测过去时间里可能发生的事情。 Philip may may have + done sth, can have + done sth 表示过去,推测过去时间里可能发生的事情。
Philip may have been hurt seriously in the car accident.
Philip can 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 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) neednt have done sth 本没必要做某事
I dressed very warmly for the trip, but I neednt 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.
2015届浙江省高考英语一轮复习训练:必修三 Unit 4《Astronomy the science of the stars》
2015届高三英语一轮学以致用训练:专题复习8(北师大版)
2015届高三英语一轮学以致用训练:专题复习12(北师大版)
2015届高三英语一轮学以致用训练:专题复习9(北师大版)
2015届高考英语一轮复习基础提升晨练:Module 4《Sandstorms in Asia》(外研版必修3)
2015届高考英语一轮复习基础提升晨练:Module 5《The Great Sports Personality》(外研版必修5)
2015届高考英语一轮复习基础提升晨练:Module 6《The Tang Poems》(外研版选修8)
2015届高考英语一轮复习配套课件:M6 Unit 4《Helping people around the world》(译林版)
2015届高考英语一轮复习基础提升晨练:Module 5《A Lesson in a Lab》(外研版必修1)
2015届高考英语一轮复习基础提升晨练:Module 3《The Violence of Nature》(外研版必修3)
2015届高考英语一轮复习基础提升晨练:Module 3《My First Ride on a Train》(外研版必修1)
2015届浙江省高考英语一轮复习训练:必修三 Unit 3《The Million Pound Bank Note》
2015届高考英语一轮复习基础提升晨练:Module 4《Music》(外研版选修6)
2015届浙江省高考英语一轮复习训练:必修四 Unit 2《Working the land》
2015届浙江省高考英语一轮复习训练:必修二 Unit 5《Music》
2015届浙江省高考英语一轮复习训练:必修一 Unit 2《English around the world》
2015届高考英语一轮复习基础提升晨练:Module 5《Ethnic Culture》(外研版选修7)
2015届高考英语一轮复习基础提升晨练:Module 6《Old and New》(外研版必修3)
2015届高考英语一轮复习基础提升晨练:Module 4《Fine Arts Western Chinese and Pop Arts》(外研版必修2)
2015届高考英语一轮复习基础提升晨练:Module 4《Carnival》(外研版必修5)
2015届高三英语一轮学以致用训练:专题复习7(北师大版)
2015届高考英语一轮复习基础提升晨练:Module 4《Great Scientists》(外研版必修4)
2015届高考英语一轮复习基础提升晨练:Module 5《A Trip Along the Three Gorges》(外研版必修4)
2015届浙江省高考英语一轮复习训练:必修三 Unit 5《Canada—“The True North”》
2015届高考英语一轮复习基础提升晨练:Module 6《The Internet and Telecommunications》(外研版必修1)
2015届浙江省高考英语一轮复习训练:必修一 Unit 1《Friendship》
2015届浙江省高考英语一轮复习训练:必修一 Unit 4《Earthquakes》
2015届高考英语一轮复习基础提升晨练:Module 5《Great People and Great Inventions of Ancient China》(外研版必修3)
2015届浙江省高考英语一轮复习训练:必修三 Unit 2《Healthy eating》
2015届浙江省高考英语一轮复习训练:必修二 Unit 4《Wildlife protection》
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