[倒装]only在句首倒装的情况Only in this way, can you learn English well. 只有这样,你才能学好英语。
  Only after being asked three times did he come to the meeting. 叫了三次,他才来参加会议。
  如果句子为主从复合句,则主句倒装,从句不倒装。例如:
  Only when he is seriously ill does he ever stay in bed. 病得狠重时,他才卧床休息。
[倒装]as, though 引导的倒装句
as / though引导的让步从句必须将表语或状语提前(形容词, 副词, 分词, 实义动词提前)。但需注意:
  1) 句首名词不能带任何冠词。
  2) 句首是实义动词, 其他助动词放在主语后。如果实义动词有宾语和状语,随实义动词一起放在主语之前。例如:
  Try hard as he will, he never seems able to do the work satisfactorily. 他工作很努力,但总不能让人满意。
  注意:让步状语从句中,有though,although时,后面的主句不能有but,但是 though 和yet可连用。
[倒装]其他部分倒装
1) so… that 句型中的so 位于句首时,需倒装。例如:  So frightened was he that he did not dare to move an inch. 他害怕得很,动也不敢动。
  2) 在某些表示祝愿的句型中。例如:
  May you all be happy. 愿你们都快乐。
  3) 在虚拟语气条件句中从句谓语动词有were, had, should等词,可将if 省略,把 were, had, should 移到主语之前,采取部分倒装。例如:
  Were I you, I would try it again. 我是你的话,就再试一次。
  典型例题:
  1)Not until the early years of the 19th century___ what heat is
  A. man did know  B. man knew  C. didn't man know  D. did man know
  答案为D. 否定词Not在句首,要求用部分倒装的句子结构。
  2)Not until I began to work ___ how much time I had wasted.
  A. didn't I realize  B. did I realize  C. I didn't realize D. I realize
  答案为B.
  3) Do you know Tom bought a new car?
  I don't know, ___.
  A. nor don't I care  B. nor do I care
  C. I don't care neither D. I don't care also
  答案为B. 句中的nor引出部分倒装结构,表示"也不".由 so, neither, nor引导的倒装句,表示前一情况的重复出现。其中, so用于肯定句, 而 neither, nor 用在否定句中。
  So frightened was he that he did not dare to move an inch. 他害怕得很,动也不敢动。
  2) 在某些表示祝愿的句型中。例如:
  May you all be happy. 愿你们都快乐。
  3) 在虚拟语气条件句中从句谓语动词有were, had, should等词,可将if 省略,把 were, had, should 移到主语之前,采取部分倒装。例如:
  Were I you, I would try it again. 我是你的话,就再试一次。
  典型例题:
  1)Not until the early years of the 19th century___ what heat is
  A. man did know  B. man knew  C. didn't man know  D. did man know
  答案为D. 否定词Not在句首,要求用部分倒装的句子结构。
  2)Not until I began to work ___ how much time I had wasted.
  A. didn't I realize  B. did I realize  C. I didn't realize D. I realize
  答案为B.
  3) Do you know Tom bought a new car?
  I don't know, ___.
  A. nor don't I care  B. nor do I care
  C. I don't care neither D. I don't care also
  答案为B. 句中的nor引出部分倒装结构,表示"也不".由 so, neither, nor引导的倒装句,表示前一情况的重复出现。其中, so用于肯定句, 而 neither, nor 用在否定句中。