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.

Perhaps when your mother gets here,
she'll talk some sense into you.
The Big Bang Theory Season 3, Episode 11

Was it PERHAPS destiny?
I think it was destiny.
The Big Bang Theory Season 1, Episode 15

Perhaps you've been reconsidering
your allegiances.
Game of Thrones Season 7, Episode 7

Perhaps you'd like to come with me.
The Big Bang Theory Season 2, Episode 12

Perhaps you're right.
The Big Bang Theory Season 5, Episode 3