一、倒装句分类
1. 完全倒装
整个谓语移到主语前面，常用于方位副词开头。
例句：Here comes the bus.（公交车来了。）
2. 部分倒装
只把助动词/情态动词/be动词提到主语前面。
例句：Never have I seen such a beautiful sunset.（我从未见过如此美丽的日落。）
二、必须部分倒装的情况
1. 否定词在句首
Never, seldom, hardly, rarely, little, not only, no sooner
Not only did he finish the work, but he also did it well.
2. Only+状语在句首
Only in this way can we solve the problem.
3. So/Such...that结构中so/such在句首
So fast did he run that nobody could catch him.
三、必须完全倒装的情况
Here/There/Up/Down/In/Out等方位副词在句首，且主语是名词时。
Out rushed the children.（孩子们冲了出来。）
四、注意事项
- 主语是代词时不倒装：Here he comes.（不倒装）
- Not until的两种句式要区分
- 强调句和倒装句不要混淆