1. (完成1c，练习本课目标语言。)

T: Let’s do 1c. First read the dialogs, then practice in pairs.

(教师应着重强调两个对话中的目标语言should, must, don’t have to, needn’t。)

4. T: Let’s do 1b. Listen to the tape and check (√) the correct boxes.

　 (附：1. √　 2. √　 3. √　 4. √　 5. √　 6.×　 7. √　 8. ×　 9. √　 10. ×)

For example:

S₁: What should we do to fight SARS?

S₂: We should change clothes often. We shouldn’t go to crowded places…

　 T: Listen to the tape again and after listening, please make an interview in pairs, then report it to the class.

Step 4 　Practice 第四步 　练习(时间:12分钟)

3. (几分钟之后，要求只看黑板上的关键词，小组表演对话。)

　 T: Close your books, look at the key words on the blackboard, then act out the dialog in groups of four.

　(教师此时不应强调学生按原文表演，可适当发挥。)

2. (学生自读1a后，四人一组练习对话。)(可以看书。)

　 T: Read 1a by yourselves, then practice it in groups of four. You can look at your books.

1. (再放1a录音，并跟读，注意语音语调。)

　 T: Listen to 1a and repeat. Pay attention to the intonation, stress and pronunciation.

1. (出示小黑板，听1a录音，回答问题。)

T: Now, listen to the tape and find out the answers to these questions.

(1)What’s Kangkang’s father?

(2)What do you know about SARS according to the tape?

(3)What should we do to fight SARS?

(让几个同学回答问题，或分组讨论形成共识。)

Answers:

(1)Kangkang’s father is a doctor.

(2)SARS spreads easily among people.

(3)We should eat healthy food and do more exercise to build up our bodies. We should keep our rooms clean and often open the windows. We shouldn’t go to crowded places. If we don’t feel well, we should go to see the doctor at once.

(再放一遍录音，并解释有关生词crowded并讲明只要求了解该词，不用掌握。)

3. (通过谈论如何保持健康，引出SARS话题。)

　 T: Good habits can help us to keep healthy and bad habits can cause diseases. In 2003, there was a serious disease called SARS spreading. What do you know about SARS?

　 (教师可用汉语适当解释。)

　 附：SARS is short form for Severe Acute Respiratory Syndrome.

　 (给学生几分钟时间讨论。)

　 T: It spreads easily among people.

　 (板书并讲解。)

　 spread

　 T: SARS is a serious disease, but we don’t have to be afraid of SARS. What should we do to fight SARS?

　 (板书)

Step 2　 Presentation 第二步 　呈现(时间:10分钟)

2. (请学生回想前面讨论的关于健康的话题。)

　 T: What should we do to keep healthy, S₁?

　 S₁: We should go to bed early at night.

T: You can also say: We have to go to bed early at night.

(板书)

have to

(引出本课目标语言have to, don’t have to并给以解释。)

　 T: We have to eat healthy food. We don’t have to eat more meat.

(要求学生使用目标语言造句。)

　 T: Please make a sentence with “have to” or “don’t have to”.

　 S₁: We have to sweep the floor often.

　 S₂: We have to study hard.

　 S₃: We don’t have to take medicine often.

　 …

　 (以同样的方式，引出本课目标语言had better。)

　 T: What else should we do to keep healthy? We had better drink eight cups of water every day.

　 (板书)

had better

　 (强调had better的用法，然后要求学生继续操练。)

　 T: Please make some sentences with “had better”.

　 S₄: You’d better go to bed before nine o’clock in the evening.

　 S₅: We had better go to school by bike.

　 …

Step 1 　Review 第一步 　复习(时间:8分钟)

1. (陈述关于习惯的话题，复习重点句型。)

T: Let’s review what are good habits and what are bad habits using these drills.

We should do…

We shouldn’t do…

We must do…

We must not do…