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.

Superman doesn't sweat on Earth.
The Big Bang Theory Season 2, Episode 11

How could Batman possibly fight Superman?
The Big Bang Theory Season 9, Episode 13

maybe he builds a suit
that can do everything Superman can do.
The Big Bang Theory Season 9, Episode 13

...and Superman catches her.
The Big Bang Theory Season 1, Episode 2

...do you wanna join us for Thai food
and a Superman movie marathon?
The Big Bang Theory Season 1, Episode 2