4 . 观察Grammar Focus中前三行的句子，完成下面的内容。
过去进行时态
定义：表示过去在某一时刻或某一段时间内正在过去进行时态进行的动作或存在的状态。
结构：主语+________+________。
时间状语：then、at that time/at this time、at+具体时间点+一般过去时的时间状语、when/while引导的时间状语从句、at the time of…

5 . 选一选
1. My parents ________ (ate; were eating) dinner at that time.
2. Mike fell into the lake while he was fishing. ________, (Lucky; Luckily) a young man saved him.
3. You must drive your car carefully because the road is ________ (icy; ice) now.
4. —This sweater is 1,998 yuan.
—You’re ________ (kiding; kidding)! They are much too expensive.
5. I was walking on the street when it began to rain ________ (heavily; heavy).

7 . 预习P1内容，试着写出下列各词的过去式
stay___________        do__________          go__________     visit_________
play___________        is___________          are___________       carry__________

9 . 用was, were 填空
1. Our teachers ________ not at school yesterday, they ________ at home.
2. —________ your mother a nurse?     
— No, she wasn’t.
3. The people there ________ very unfriendly in the past, but now they are friendly.
4. —How ________ the food in your school last week?       
— Terrible.

10 . 【预习导学-旧知回顾】
根据提示完成句子。
1. I didn’t know whom the letters ________ （be）from.
2. Tom says that they ________（play）basketball at six o’clock yesterday evening.
3. He puts five ________（pound）into the bottle every day.
4. Our hope is s________ to yours.
5. He t________ the ball at me.