be surprised at与be surprised by 分别是什么意思，举例说明

Question

如题所述

Answer 1

be surprised by
使……吃惊
If you do, you probably won't be surprised by the following study.
如果相信那么你对或许对下面的研究也就不那么惊讶了。

be surprised at

对…感到惊奇；使…感到意外；对……很吃惊
But you may be surprised at who needs to change to make this happen, and how these changes occur.
但是，你或许会对谁需要改变而发生这种事以及如何产生上述变化而感到惊讶。

Answer 2

我对什么感到惊讶 有主动性
我被什么感到惊讶 被动性