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.

Maybe it's a special guest who
I invited just to surprise you.
The Big Bang Theory Season 12, Episode 16

Maybe we should pitch it
to Colonel Williams today.
The Big Bang Theory Season 11, Episode 8

Sheldon, MAYBE you
don't know what to do
The Big Bang Theory Season 12, Episode 19

Maybe that'’ll tell you
something.
The Big Bang Theory Season 12, Episode 4

MAYBE you and I should try
to get a place together.
The Big Bang Theory Season 10, Episode 18