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 (cou
should 和ought to 都为“应该“的意思，可用于各种人称。---Ought he to go?---Yes. I think he ought to.表示要求，命令时，语气由 should（应该）、had better最好）、m
had better 相当于一个助动词，它只有一种形式，它后面要跟动词原形。had better do sth had better not do sthIt is pretty cold. You'd better put on my coat.She'd better not play
would rather do would rather not do would rather… than… 宁愿……而不愿。 还有would sooner, had rather, had sooner都表示“宁愿“、“宁可“的意思。 If I have
注意： 1）would like； Would like to do = want to 想要，为固定搭配。 Would you like to go with me? 2）Will you…? Would you like…? 表示肯定含义的请求劝说时，
问句 肯定回答否定回答 Need you…?Yes, I must. No,I needn't Must you…? /don't have to. 典型例题 1）---Could I borrow your dictionary?---Yes, of course, you____. A. might
带to 的情态动词有四个：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，为六个。它们的疑问，否定形式应予以注意： Do they have to pay
这两词既可做实义动词用，又可做情态动词用。作为情态动词，两者都只能用于疑问句，否定句和条件句。 need 作实义动词时后面的不定式必须带to，
名词可以分为专有名词（Proper Nouns）和普通名词 (Common Nouns），专有名词是某个（些）人，地方，机构等专有的名称，如Beijing，China等。普通名词是
___________________________________________________ 情况 构成方法 读音例词__________________________________________________一般情况 加 -s 1.清辅音后读/s/; map-maps 2.