5. should　　 应该 ; 应当

1). You should listen to the doctor's advice.

2). You should study the article carefully.

4. shall　

1). 在疑问句中, 用于第一、三人称表示说话人征求对方的意见或向对方请求。

2). 用于二、三人称,表示说话人给对方的 命令、警告、允诺等概念。

1). - Shall I place an order with you now? -No, you　 needn't .

-Shall he turn down the radio a bit?　 -Yes, please.(No, please don't.)

2). You shall have the English book as soon as I finish it.

3). Everything that he owns shall be taken away from him.

4). Your brother seldom comes to see you, ____?

A. does he　　　　B. doesn't he　　　　 C. will he　　　　　D. isn't he

5). It's a fine day. Let's go fishing, ____ ?

A. won't we　　　 B. will we　　　　　 C. don't we　　　　　D. shall we

3. must 1). 表示必须要做的事: 必须　　　

2). 表示很有把握的推断: 一定, 准是。have (has)to : have (has)got to　　 必须, 不得不。过去式: had to

3). -Must I get to the station before three o'clock? 　　 -Yes, you must. ( No, you needn't. )

4). I'm afraid you will have to wait a while.

5). She must be in the classroom now.

6). Mary ____ be in Paris, I saw her in town only a few minutes ago. (NMET 94)

A. mustn't　　　 B. shouldn't　　　 C. can't　　　　　 D. may not

2.may 表示询问或说明一件事可不可做 ; 表示某事有可能发生。 might 是may的过去式; 用在疑问中比may委婉、客气。

1). -May I take this book out of the reading-room?

-No, you mustn't.　　 ( Yes, you may.)

2). -Might I make a suggestion?　　 -Yes, you may.

1. can , be able to　　 be able to 表示经过努力后, 能够做到; be able to 有多种形式的变化。can　 1). 表示体力或脑力方面的能力; 2). 表示允许、可能性。could 是can的过去式, 表示过去有能力及过去存在的可能性 ; 用于疑问句表示委婉地提出问题。

1). The fire spread through the hotel very quickly but everyone ____ get out.　(NMET 97 )

A. had to　　　　 B. would　　　　　 C. could　　　　　 D. was able to 2). She asked if she could keep the book for another two days.

　3). -Will you stay for lunch?　　

-Sorry, __ . My brother is coming to see me. (NMET99)

A. I mustn't　　 B. I can't　　　　　 C. I needn't　　　 D. I won't

1.没有人称和数的变化。2. 有些情态动词有过去式的变化:

e.g. will → would , can → could , may→ might ,　 dare → dared

l　　　　 情态动词的否定式: 情态动词+ not +动词原形can not: can't , must not: mustn't , need not : needn't

l　　　　 情态动词的用法及相互区别, 是考试的内容之一。

第二节：任务型写作(共1题，满分25分)

假定你时李华，有一位美国朋友John托你在北京找工作。当你看到《中国日报》(China Daily)上刊登了一则招聘启示的时候，你认为很适合。请你用英文写一封短信(词数90左右)，用E-mail发给他，告知此事。广告原文如下：