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.

Keep him longer,
when you get to the PARTY...
The Big Bang Theory Season 1, Episode 16

l was thinking huge PARTY, balloons,
bouncy house for the kids.
Breaking Bad Season 4, Episode 7

"Raj, I can't come to the PARTY.
This is all just too much for me.
The Big Bang Theory Season 6, Episode 24

And I can't go back to my PARTY
because he's there.
The Big Bang Theory Season 1, Episode 6

and showing up
at a costume PARTY
The Big Bang Theory Season 12, Episode 5