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.

Albuquerque Police!
You're under ARREST!
Get down on the ground!
Breaking Bad Season 2, Episode 8

Ja. Und later she's going to ARREST me
for going faster than the speed of light.
The Big Bang Theory Season 6, Episode 5

because there's an ARREST warrant
issued against you
Money Heist Season 3, Episode 4

You are under ARREST.
I better call Saul.
Breaking Bad Season 2, Episode 8

Am I under ARREST?
No. Sky--
Breaking Bad Season 5, Episode 10