1.there be (exist seem happen appear live rise stand)结构
2.here there now then+come(b)+主语结构
3.方向副词out in up down等放在句首且为主语时
4.分词+be+主语
5.介词短语放句首如on the wall /under the tree is a ...
原句语序为123即主谓宾（宾补）完全倒装后为321
一般倒装选择考的多,多做做就熟了.