请教一个问题.

benben_cj

李笑来的<<高分作文>>第4篇里有这样两个句子:

"Parents help their children much more than do good teachers."

"Parents might do their children harm more than do bad teachers."

这里more than do teachers是不是倒装句,请从语法结构上分析以下,什么时候可以这样用?

另外

"Parents help their children much more than good teachers."

或

"Parents help their children much more than good teachers do."

是否正确,为什么?

谢谢.

Joypan

http://forum.chasedream.com/dispbbs.asp?boardID=68&ID=209879&page=1