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.
![WOMAN [ON PA]:
The white zone is for immediate
loading and unloading
WOMAN [ON PA]:
The white zone is for immediate
loading and unloading](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
WOMAN [ON PA]:
The white ZONE is for immediate
loading and unloading
Breaking Bad Season 2, Episode 9

Look, I know this experiment is
a big step outside of your comfort ZONE.
The Big Bang Theory Season 10, Episode 4

Can't talk, in the ZONE.
The Big Bang Theory Season 7, Episode 6

Bow, General Zod trapped
in the Phantom Zone...
The Big Bang Theory Season 3, Episode 13

Although, that could just be
my newly defoliated bikini ZONE.
The Big Bang Theory Season 6, Episode 9