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.

As PECULIAR and annoying
as you can be,
The Big Bang Theory Season 5, Episode 5

That's a PECULIAR conclusion.
The Big Bang Theory Season 4, Episode 3

Yeah, excuse me, Penny, but in this room,
you're the one who's PECULIAR.
The Big Bang Theory Season 2, Episode 12

Well, now, here's a PECULIAR e-mail.
The Big Bang Theory Season 2, Episode 23

I mean, I get it. You're a little PECULIAR.
Like Sheldon.
The Big Bang Theory Season 2, Episode 12