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.

- One teaspoon SUGAR? Raw SUGAR?
- Yes. Yes.
The Big Bang Theory Season 2, Episode 15

- I mean, I like a little brown SUGAR--
- Guys.
The Big Bang Theory Season 10, Episode 23

Here you go.
Light cream, no SUGAR.
The Big Bang Theory Season 12, Episode 22

Oh, blah, blah, blah.
Give me some SUGAR, bestie.
The Big Bang Theory Season 4, Episode 21

I'm like a man
made of SUGAR in a world of ants.
The Big Bang Theory Season 10, Episode 7