c、小组展示

三、展示交流

挑战一：观察与运用。先组内讨论交流，然后由小组派代表就共性问题进行讲解。针对学生的疑惑，教师给予点拨。

挑战二：机会就掌握在你手中，快将改编的对话在全班面前展示吧。

　　挑战三：... 相信你一定行！Come on!

　　四、点拨升华

　　A、一般过去时表示过去某个时间里发生的动作或存在的状态。一般过去时的一般疑问句基本结构：Did 主语+动词原形+其他？例：

---Did you see any cow?

---Yes, I did. /No, I didn't.

　　B、milk的用法:milk即可作动词，也可作名词。作名词时，意为"牛奶"；作行为动词时，意为"挤奶"。

试译：给奶牛挤奶_____

五、当堂练习.

I.单项选择。

( ) 1.Did he ___to sleep late last night? A. went B. go C. goes

( ) 2.Yesterday I didn't stay at home. I ___ to my teacher at school. A. talk B. talks C. talked

( ) 3. We ___ any classes last week. A. don't have B. didn't have C. had

( ) 4. China ___ the WTO in 2001. A. joined B. joins C. join

( ) 5.-Did you watch TV last week? -_____．

A. Yes, I do B. Yes, I did C. No, I wasn't

Ⅱ.用括号内所给单词的适当形式填空。

1. Tom and Mary _____ (come) to China last month.

2. My mother _____ (not do) housework yesterday.

3._____your father _____ (go) to work every day last year?

4. He _____ (be) here just now.

5. Did she _____ (have) supper at home?

Ⅲ.根据汉语完成句子。

1. 我三年前骑过马。I ____ a ____ three years ago.

2.昨天我们在公园照了相。We ____ ____ in the park yesterday.

3.昨天上午他们回家喂了小鸡。