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.

Aw, well, the REAL surprise
is how surprised
The Big Bang Theory Season 10, Episode 6

I got REAL good hearing there,
stud.
The Big Bang Theory Season 12, Episode 15

Gosh! Gosh! Gosh, Moscow!
It’s a REAL bloodbath!
Money Heist Season 1, Episode 6

you're in for a REAL
surprise later on.
The Big Bang Theory Season 5, Episode 7

For REAL. That's a stone loss.
Breaking Bad Season 3, Episode 9