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.

Though it so OFTEN is what people deserve.
Game of Thrones Season 6, Episode 3

Free licence to bitch and moan.
How OFTEN do you get that?
Breaking Bad Season 3, Episode 9

More OFTEN they die young.
Game of Thrones Season 4, Episode 8

We're OFTEN stuck with the names
our enemies give to us.
Game of Thrones Season 5, Episode 3

We should do this more OFTEN.
The Big Bang Theory Season 5, Episode 23