4. (根据2a图片及下面的提示词复述北京古城墙的变化。)

3. (听2a录音，注意语音语调。板书并帮助学生掌握生词government。)

　 T: Here is a passage about the change in the old city walls. Let’s listen together and repeat. Pay attention to the pronunciation and intonation.

2. (教师利用幻灯片出示下列图片，理解生词rebuild，让学生利用图下面的词语，给每幅图写一个句子。)

　 T: Make sentences according to the words under the pictures.

　　 (used to be)　　　 (be pulled down)　　 (appear)　　　 (try to, protect, rebuild)

　 (学生活动期间，教师在教室里来回走动，及时帮助有困难的学生，然后找四个学生到黑板上写出自己的句子。)

　 (检查学生的书写情况并讲评，适当贯穿德育教育。)

　 T: This is the change in the old city walls.

　 (板书)

1. (通过师生对话，引入2a。)

T:　 Were there many old city walls in Beijing before?

S₁: Yes, there were.

T: Are there many old city walls in Beijing now?

S₁: No, there aren’t.

T:　 What happened to them? Do you want to know? Now, let’s see some pictures.

4. (完成1c。巩固反意疑问句。)

　 T: Now, class, please do 1c by yourselves. Then let’s check the answers.

(师生共同核对答案。)

Step 4 　Practice 第四步 　练习(时间:10分钟)

3. (根据黑板上的句子表演对话。)

　 T: Act out the dialog according to the tag questions on the blackboard.

2. (跟读1a，注意语音语调。)

　 T: Listen to the tape and follow. Pay attention to the pronunciation and intonation.

1. (在1a中找出反意疑问句。教师找几名同学将找到的句子写在黑板上，教师给予总结。完成1b。)

　 (板书)

2. (再听1a录音，回答下列问题。进一步感知对话内容，掌握反意疑问句。)

T:　　 Now listen to 1a again, then answer the following questions.

(1) It’s a nice day, isn’t it?

(2) There are still many old city walls in Beijing, aren’t there?

(3) Kangkang knows a lot about the old city walls, doesn’t he?

(核对答案。)

Step 3 　Consolidation 第三步 　巩固(时间:15分钟)

1. (设置简单的听力任务，听1a录音，感知对话的内容。)

T: Now let’s listen to 1a and find out the answers to the questions.

(1) Where did Kangkang and Michael go to see some old city walls?

(2) How many years are the old city walls?

(核对答案。)