倒装句是英语语法中的一种结构，通常是为了强调或改变语气而将句子的语序颠倒。
在一般的陈述句中，主语通常在动词之前，但在倒装句中，动词却出现在主语之前。以下是几种常见的倒装句结构：
1. 完全倒装：2.常规语序：He is coming to the party.3.完全倒装：Is he coming to the party?4.助动词倒装：5.常规语序：They have never been to China.6.助动词倒装：Never have they been to China.7.否定副词倒装：8.常规语序：She seldom goes to the cinema.9.否定副词倒装：Seldom does she go to the cinema.10.状语倒装：11.常规语序：On the top of the hill stood a castle.12.状语倒装：On the top of the hill a castle stood.13.So和Such引导的句子倒装：14.常规语序：The movie was so interesting that everyone stayed until the end.15.So引导的倒装：So interesting was the movie that everyone stayed until the end.16.Such引导的倒装：Such was the interest in the movie that everyone stayed until the end.在使用倒装句时，需要注意的是，倒装句的使用通常受到语境和语气的影响。倒装结构常用于强调、修辞疑问、部分否定等语境中，而在一般陈述句中使用相对较少。
