3. 倒装的原因

a) 句子语法结构的需要。例如：

Did you attend the meeting? 你参加会议了吗?

Long live peace! 和平万岁!

b) 一些句型的固定用法。例如：

Such were his last words. 他最后的话就是这样。

c)强调的需要。倒装以后，句子更加流畅生动。例如：

Never before have we seen such a sight. 以前我们从来没有见过这样的情景。

Before us lay a lot of difficulties. 在我们前面有很多困难。

Often did we warn them not to do so. 我们曾多次警告他们不要这样做。

4. 倒装句的基本用法

a) 构成疑问句(除对主语或主语之定语提问的特殊疑问句外)：

When are we going to drink to your happiness? 我们什么时候喝你们的喜酒?

Have you seen the film? 你看了那部电影吗?

b) 在以here, there, now, then, in, away, up down等副词开头的句子中:

Away went the crowd one by one. 人们一个一个地离去。

Here comes our teacher! 我们的老师来了!