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.

This one's been killed SIX times.
You don't hear him bitching about it.
Game of Thrones Season 7, Episode 6

An arrow SIX inches from my heart.
Game of Thrones Season 4, Episode 9

All SIX were abandoned.
Game of Thrones Season 2, Episode 1

# Yeah, I'm SIX... #
The Big Bang Theory Season 11, Episode 13

Logan overdosed
SIX months later.
Westworld Season 2, Episode 10