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.

I'm too small
for Twister.
The Big Bang Theory Season 5, Episode 10

Amy, really? Twister?
The Big Bang Theory Season 5, Episode 10

Or we play... Travel Twister.
The Big Bang Theory Season 5, Episode 10