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.

Oh, yeah. Wasn't that the basis
of your postdoc FELLOWSHIP?
The Big Bang Theory Season 7, Episode 20

That's why I was refused clearance
for a government research FELLOWSHIP...
The Big Bang Theory Season 2, Episode 1

it's the MacArthur Fellowship.
The Big Bang Theory Season 10, Episode 9

I was offered a summer research FELLOWSHIP
at Princeton.
The Big Bang Theory Season 10, Episode 24

The pleasures of FELLOWSHIP
and camaraderie...
The Big Bang Theory Season 4, Episode 2