2019学年度外研版选修八 Module 6 Section Ⅲ　Grammar--情态动词

学案设计

[语 境 自 主 领 悟]

先观察原句 后自主感悟 ①The topic of the poem can't be travel.

②It must be something more personal.

③It may be friendship.

④It might be the journey through life.

⑤Li Bai must have had a strange life.

⑥He can't have been interested in a normal life.

⑦He may have died when he fell out of a boat.

⑧You should read the poem sometime.

⑨Could you answer a few questions，please？

⑩I told her to stop singing，but she wouldn't listen. 1.句①－⑦中黑体部分在句中均作推测；其中句⑤－⑦表示对过去所发生的事情的推测。

2.句⑧表示说话人的意愿，意为"应该"，句⑨表示"请求"，句⑩表示意愿。 [语 法 精 要 点 拨]

　　考点一　情态动词表推测

　　1．情态动词表推测的三种句式

　　(1)在肯定句中一般用must(一定)，may(可能)，might/could(也许，或许)。

　　At this time my father must be working in his office，isn't he?

　　在这个时候，我父亲一定正在办公室工作，是吗？

　　He was afraid they might not agree with him.

　　他担心他们可能不同意他的意见。

　　(2)否定句中用can't/couldn't(不可能)，may not/might not(可能不)。

　　They can't be at work now，for I saw them eating in the restaurant just now.

　　他们现在一定没有在上班，因为我刚才看见他们在餐馆吃饭。

　　He may/might not know the scientist.

他也许不认识那位科学家。