1、当地点副词there here或者back down off up等副词在句首或者地点状语如at the top of..in the...在句首的时候句子应该是完全倒装形式的
eg.Down came the rain and up the umbrellas.
但是要注意：1、主语为代词主谓不倒装 2、在定于从句中,地点状语在句首的时候句子是完全倒装形式的eg.We arrived at a farm house,in the front of which sat a girl.3、被动语态中也是如此 eg.In the distance could be seen the purple mountains.