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新東方酷學(xué)酷玩英語夏令營介紹在孩子成長的過程中應(yīng)該掌握的基本的情態(tài)動詞的用法。

    新東方酷學(xué)酷玩英語夏令營介紹在英語學(xué)習(xí)中情態(tài)動詞的基本用法。

    1) may(might) have + done sth, can (could) have + done sth　表示過去，推測過去時(shí)間里可能發(fā)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，對過去時(shí)間里可能發(fā)生的事情的推測，語氣較強(qiáng)，具有"肯定"，"諒必"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。

    本應(yīng)該做某事，而事實(shí)上并沒有做。否定句表示"不該做某事而做了"。

    you ought to (should) have been more careful in this experiment.

    he ought not to have thrown the old clothes away.（事實(shí)上已扔了。）

    ought to 在語氣上比should 要強(qiáng)。

    4) needn't have done sth　 本沒必要做某事。

    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.