My English teacher has often pointed out the wrong way to use "pay".

I haven't concerned with that.

However, one day, a native speaker checked my journal entry and she pointed out the wrong way to use as same as my teacher.

I found there was a few corrections about "pay" and "pay for".

To be honest, I didn't understand the difference between the two of them, so I googled it.

I realized that "pay" is to pay money or pay someone and "pay for" is to pay money of something, but there are the specific way to use, such as "pay fee", "pay tax" and "pay fine" to name but a few.

The word "pay" is easy to remember for Japanese people, but it has a few the way to use, so I'm not sure but I think that most of them don't use it completely.