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.

Passing the TORCH.
Breaking Bad Season 5, Episode 16

How about an acetylene TORCH?
The Big Bang Theory Season 4, Episode 1

Exactly. It's like asking the Human Torch
to heat up your frozen burrito.
The Big Bang Theory Season 6, Episode 18

He didn't TORCH people
or listen to some red witch.
Game of Thrones Season 6, Episode 9

and an acetylene TORCH
to melt it down.
The Big Bang Theory Season 7, Episode 7