[语法初识]

原句感知 自主探究 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。 　　

　　[语法剖析]

语法点一 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。