被动语态补"to"

题目

被动语态补"to"
They found the result very satisfying.转成被动时为The result is found very satisfying.而I saw her pass by the window.转换成被动时为She was seen to pass by the window.为什么前者变被动时不补"to",而后者要补"to"
即什么时候要补"to"
真的感谢二位.但是什么时候可以省略"to"呢?

答案

1.The result is found very satisfyingfound 后面没有动词撒也可以是The result is found “to be”very satisfying,但是那个to be 被省略了2.She was seen to pass by the windowseen和pass都是动词 一般情况下 英...