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.

or possibly penguins,
her English is atrocious.
The Big Bang Theory Season 10, Episode 6

If you're offended, take it
up with the English language.
The Big Bang Theory Season 12, Episode 23

English - SDH
The Big Bang Theory Season 9, Episode 24

from Russian to English.
The Big Bang Theory Season 12, Episode 9

English - SDH
The Big Bang Theory Season 10, Episode 6