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.

doing in
Gale Boetticher's apartment?
Breaking Bad Season 4, Episode 7

Hi. Gale.
Breaking Bad Season 3, Episode 8

So you think this Gale person
is your Heisenberg?
Breaking Bad Season 4, Episode 4

...Gale really screwed us up.
Breaking Bad Season 3, Episode 8

This guy, Gale Boetticher,
he was eccentric.
Breaking Bad Season 4, Episode 5