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.

It's for her surprise
FRONTIER birthday dinner.
The Big Bang Theory Season 11, Episode 11

set in a magical FRONTIER town?
The Big Bang Theory Season 5, Episode 10

Frontier scallops?
I shouldn't think so.
The Big Bang Theory Season 11, Episode 11

dressed in FRONTIER frock coats.
Oh.
The Big Bang Theory Season 11, Episode 10

Now, would you care to join me
for an authentic FRONTIER dinner
The Big Bang Theory Season 11, Episode 11