Translation of "Confusing" in Chinese

I'm always confusing John with Paul.

我总是把John和Paul搞混。

- She is always confusing salt with sugar.
- She frequently gets sugar and salt mixed up.

她经常把糖和盐搞错。

This is an example of confusing two things that have a common cause with one thing that causes another.

这显然是将属并列关系的两件事误解成为因果关系了。