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.

You get to choose
between a mountain BIKE or a PS3.
The Big Bang Theory Season 2, Episode 19

Better than watching a guy in a fur cloak
ride a girl's BIKE?
The Big Bang Theory Season 9, Episode 21

(GROANS)
Who leaves their BIKE in the hallway?
The Big Bang Theory Season 10, Episode 9

By the way,
it isn't like riding a BIKE.
The Big Bang Theory Season 7, Episode 24

It turns out you can forget
how to ride a BIKE.
The Big Bang Theory Season 3, Episode 10