正常语序Her student stood by her side．她的学生站在她的边上．
倒装语序By her side stood her student·
正常语序We have rarely found him in such a good mood．我们很少看到他情绪那么好·
倒装语序Rarely havewe found him in such a good mood·
1．否定词语置于句首
never．no，neither，hardly，scarcely，little，seldom，rarely，not until，nowhere，at no time，on n0 account．in no respects，in no sense，in no way，under no circumstances，by no means，no longer，no less，no more，no sooner，in vain
2．only 状语置于句首
only加副词：only then，only onceonly加介词短语：only at that time，only in this way，only by doing
only加状语从句：only because，only when
3．not only……but also……置于句首
4．80……that……状语、表语置于句首
5．than引导的比较状语从句(可以)
6．表语 系动词 主语
7．存在句(there be…)
8．as引导的让步状语从句