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.

...but this kid's been on the bubble
a while NOW. It's a long time coming.
Breaking Bad Season 3, Episode 12

Exit through the left, NOW!
Money Heist Season 3, Episode 6

Which I shouldn't have,
because NOW I'm scared of it.
The Big Bang Theory Season 11, Episode 13

- Check that out!
- Go on, NOW.
Game of Thrones Season 6, Episode 8

Now, come on, Sheldon,
finish him off.
The Big Bang Theory Season 3, Episode 5