英语中有些介词和连词虽然意义看似相近，但用法却有着明显的差别，现将常见而易混的此类词总结归纳如右：

介词                连词               含义

Like              as               像……那样

in spite of       (al)though         虽然

with              as                随着

because of         because           因为

during            while             在……期间

in case of         in case           万一

on                as soon as        一……就

记住这样一句顺口溜，有助于我们正确使用这些介词和连词：

介连区别应注意，介加短语连加句。

请对比下面各组句子：

1. He acted bravely like a soldier.

We should do good deeds as Lei Feng did.

2. In spite of the great difficulty, they finished the work in time.

He came here as early as usual, although it was raining hard.

3. With the development of economy, more and more people are becoming richer and richer.

As he grew older, he began to know more about science and technology.

4. The boy had to leave school because of the sudden death of his parents.

Our teacher fell ill, because he had been working too hard.

5. We were very excited during the football match.

I lost my watch while we were playing football.

6. You must remember to ring the bell in case of fire.

Please telephone the police in case a fire breaks out.

7. She began to cry on hearing the sad news.

They cheered as soon as the news came that their volleyball team had won the match.