5. 用于 so，neither，nor 开头的句子，表示重复前句的部分内容。原句的谓语应与前句的谓语的时态、形式相一致。例如：
He has been to Canada. So have I.
他去过加拿大，我也去过。
You can't speak French. Neither can she.
你不会说法语，她也不会。

6. 为了保持句子平衡，或为了强调表语或状语，或是上下文紧密衔接时。例如：
They arrived at a small village，in front of which was a big river.
他们来到一个小村庄，村庄前面是条大河。
Inside the pyramids are the burial rooms for the kings and queens.
在金字塔里面有埋葬国王和王后的墓室。

二、部分倒装

1. 用于疑问句。例如：
Do they work in the factory？
他们在这家工厂上班吗？

2. 用于省略的虚拟条件状语从句。例如：
Had I seen him yesterday wouldn't go to his house now.
如果我昨天见到他了，我现在就不去他家了。

3. 用于“形容词（或名词、动词）+ as （though）”引导的让步状语从句中。例如：
Young as he is，he knows a lot.
他虽然很年轻，但知道很多。
Try as he would，he might failed again.
他虽然可以试试，可能还会失败。
注意：如果从句的表语是名词，其名词前无形容词时，不用冠词；若有形容词要用冠词。
Child as he was，he had to make a living.
他虽是个孩子，但得糊口。
A bad-tempered man as Mr Chen is，he loves us deeply.
陈老师脾气不好，但他深深地爱着我们。

4. 用于 no sooner … than … ， hardly … when 和 not until 等句型。例如：
No sooner had I come in，the telephone rang.
我刚进屋，电话铃就响了。
Not until 12 did he go to sleep.
直到 12 点他才入睡。

5. 用于 never，hardly，seldom，scarcely，barely，ittle，at no time，not only 等开头的句子。
Never shall I do this again.  我绝不会再做此事。
Seldom does he come late.   他很少迟到。