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.

No, Your Grace. No family living.
Game of Thrones Season 3, Episode 3

I do not mean to offend, Your Grace.
Game of Thrones Season 4, Episode 10

You sent for me, Your Grace?
Game of Thrones Season 4, Episode 4

Your Grace. My King.
Game of Thrones Season 4, Episode 2

I am touched by your concern, Your Grace.
Game of Thrones Season 3, Episode 1