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.

First time I met you,
you held a KNIFE at me.
Game of Thrones Season 3, Episode 6

It must have felt good sticking
a KNIFE in that horned fucker.
Game of Thrones Season 8, Episode 4

- Hodor, get his KNIFE.
- Hodor.
Game of Thrones Season 4, Episode 5

I drove my KNIFE
right through his brain.
Game of Thrones Season 1, Episode 7

Did you pull a KNIFE on me in the night?
Game of Thrones Season 2, Episode 7