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.

They came to us
from White Harbour and Barrowton,
Game of Thrones Season 4, Episode 10

There's a ship waiting in the HARBOUR
bound for Pentos.
Game of Thrones Season 4, Episode 2

Find her. Bar the gates of the city.
Seize every ship in the HARBOUR.
Game of Thrones Season 4, Episode 3