倒装:  分完全倒装和部分倒装
1. 完成倒装: 整个谓语至于主语之前.当句首为方位副词, 如here, there, up, down, away 等, 而谓语动词又是come, go, fly, rush 等时,整个谓语应置于主语之前.
There goes the bell.
Here comes the car.
Now comes you turn.
From the distance came occasional shots.
2. 部分倒装:指谓语的一部分置于主语之前．
１) 有否定词或带否定含义的词位于句首引起的句子, never, not until, hardly, seldom, rarely, in no way, at no time, in no case, by no means, under no circumstances, on no account
  Never before have I seen anyone who can fix the car so skillfully.
  In no way can we ignore such a mistake.
２) only 置于句首做状语
   Only after you have received his telegram can you know the time of his arrival.
   Only once did we receive a letter of complaint.
３) 某些引起副词从句的词组, 如 so…that, hardly…when, no sooner…than, scarcely…when,  not only…but also, neither, nor, so
So severe was the storm that the pilot couldn’t fly through it.
That English fellow’s song are very beautiful. Not only does he write the words to the songs, but also composes the music.
You don't like this book. Neither do I.
She  can’t swim, neither(nor) does her husband.
I am impressed by his knowledge.    So am I. 

强调: 强调主语, 宾语, 状语, 补语. 句型为 it is/was ….that ….
It is the person who makes no mistakes in the compostion.
It is Mary that she is called.
It might have been in the room that I lost my key.
It was a postcard that my mother sent me.