句首是neither，nor表示“也不”时，主谓语需要倒装。
I couldn't solve the problem, neither /nor could my brother.
= I couldn't solve the problem. My brother couldn't, either.
I didn't go to school, nor did Mary.
= I didn't go to school. Mary didn't, either.
so表示“也是，同样”时的倒装
句首是so表示“也是，同样”时，主谓语需要倒装。
Copper is a good conductor; so is silver.
John failed in the exam; so did Mark.
He takes part in sports activities, so do his classmates.
I have been to the Temple of Heaven, so has she.
平衡倒装
There+be或其它不及物动词come，go，happen，occur，stand，exist等结构中，为避免句子头重脚轻，平衡倒装。
There stands an old house that is being pulled down.
There existed a hostile relationship between the two families.
There are many hobbies involving the creativity of a person.
Such/so…that句型中的倒装
Such/so…that句型中such+名词或so+形容词，副词等位于句首时，主句中主谓倒装。
So badly was he injured in the accident that he had to stay in the hospital for treatment.
So excited was I that I didn’t know what to say.
比较状语从句中的倒装
than引导的比较状语从句中，主从句谓语趋向中间以达到平衡，此时从句要求主谓倒装。
Nowadays, with the rapid development of science and technology, man is less limited by nature than were his forefathers/ancestors.
表频率的状语至于句首倒装
表频率的状语至于句首，倒装。
Many a time has he given us sound advice.
Twice a week does he go to visit his grandparents.
More than once have we heard him make such promises.
As,though让步状语从句中倒装
在以as，though引导的让步状语从句中，从句常用倒装语序，把表语或状语提前。(名，形，付， 动词)
Child that he is, he can distinguish between right and wrong.
Intelligent as/though you are, you should be modest.
Much as I admire him, I don't think he is perfect.
Try as she did, she failed again.
虚拟语气中的倒装
虚拟语气中省略“if”或“whether”时的倒装。
Were it left to me to choose, I prefer the latter to the former.
Had it not rained so heavily, we would have visited the Summer Palace yesterday.
Be we rich or poor, we should have our own dignity.
副词至于句首
Here、there、in、out、up、down等表示方位的副词至于句首时，主谓需要倒装。
Here comes the bus.
Down jumped the little boy from the bridge.
Here it ( 指the bus) comes.
There they went.