高中英语复习 情态动词学案.pdf

情态动词 情态动词 一、情态动词的语法特征 1.情态动词不能表示正在发生或已经发生的事情，只表示期待或估计某事的发生。  2.情态动词除 ought 和 have 外，后面只能接不带 to 的不定式。 3.情态动词没有人称、数的变化，即情态动词第三人称单数不加-s 。 4.情态动词没有非谓语形式，即没有不定式，分词等形式。  基本用法 能力 The cinema can seat 1,000 people. 请 求 Could I use your dictionary? can/ （ 一 、 could 二） 许可(can) Yes, you can. 一 时 的 可 Our house is on the top of the hill, and in winter the winds can be pretty cold. 能性 惊讶 How can you be so careless. ★ be able to do 经 过 一 番 努 力 做 成 The fire spread the building quickly but everybody was able to escape. ★ can’t …too…无论怎样也不为过 You can’t be too careful when you cross the street. 请 求 May I join you? may/ （一） might 许可(may) If you wish to do it you may. 祝愿 May you be happy. ★may well 很可能 His appearance has changed so much that you may well not recognise him. ★may/ might as well 不妨 If that is the case, I may as well try. We may as well finish the job, now (that) we’ve got so far with it. 请求（二） Would you pass me the book? 建议 Will you have some tea? will/ 意愿、决心 I will do anything for you./ He will give up would smoking. 倾 向 或 习 惯 Oil will not mix with water./ He will surf the Internet every night. 性动作 ★would do 过去常常，现状不详。 used to do 过去常常，现在不做。 （一、三）征询 Shall I turn on the light, Mum?/ Shall the boy wait? 意见 （ 二 、 三 ） I promise you shall see her again before long. shal l 允诺