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.

there's a fiction writer's SEMINAR
at UNM.
Breaking Bad Season 2, Episode 4

...and look for the SEMINAR
on molecular positronium, then...
The Big Bang Theory Season 1, Episode 10

...in the middle of your thermodynamic
fluctuations SEMINAR?
The Big Bang Theory Season 4, Episode 6