5. 洗衣機發(fā)明后，我們不需要手工洗衣服了。

6. 把豬肉放在冰箱里面，防止它變質(zhì)。

3. 昨晚你打我電話時，我正在網(wǎng)上購物。

4. 因特網(wǎng)已經(jīng)改變了我們的生活方式。

三、 完成句子

1. 昨晚我讀完了所有的章節(jié)。

      

2. 過去人們常常用鹽來使魚或肉保存更長一段時間。

8. A number of important matches (cover) live on CCTV 5  at this time every year.

7. —When we (meet) tomorrow?

—I have no idea.

6. He (write) a novel last month. I wonder if he has finished it.

5. The problem the leaders paid attention to (solve) next week.

4. Oh,my god!Little Tom seems to be sad. I guess something (happen) to him.

3. 一Why didn't David come to my birthday party yesterday?

—He (go) to Beijing on business yesterday afternoon.

2. The engineer promised that my car (be) ready next Monday.