4. He acted like he had never been in a museum before.

3. At the age of six, my father took me to the circus for the first time.

2. It was not until it began to rain when I noticed his umbrella left in my car.

1. We become more and more impatient of interruptions when the years go on.

4. 检查有无连词之间的误用， 尤其是if和whether之间的误用。

　　 练 习

3. 检查主语从句和同位语从句前的连词是否遗漏。

2. 复合句中， 检查从属连词的使用是否正确。

1. 并列句中， 检查并列连词的使用是否正确， 有无遗漏并列连词的情况。

10. proud of that → proud that, that从句前的介词of必须省略。

第九节 连 词

9.of → from, made from...是指制作过程中发生性质变化， made of是物质质地未变。