The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

I'm not proud of it, Amy,
but I have a TEMPER.
The Big Bang Theory Season 11, Episode 17

That TEMPER of yours
is a dangerous thing.
Game of Thrones Season 1, Episode 3

My TEMPER?
Game of Thrones Season 1, Episode 3

- He gets his TEMPER from his daddy.
- Ah.
The Big Bang Theory Season 1, Episode 4

According to him, you're over-sensitive
and have a TEMPER.
The Big Bang Theory Season 3, Episode 7