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.

The Crag will have a maester
and he will have what I need.
Game of Thrones Season 2, Episode 7

Aye, gone to the Crag, but not to negotiate.
Game of Thrones Season 2, Episode 7

He has gone to the Crag
to accept the surrender.
Game of Thrones Season 2, Episode 7

Come with me to the Crag.
Game of Thrones Season 2, Episode 7

You're riding to the Crag
to negotiate a surrender?
Game of Thrones Season 2, Episode 7