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.

I know Mr. Data isn't
supposed to SMILE,
The Big Bang Theory Season 12, Episode 24

I'll give him a red SMILE
Game of Thrones Season 2, Episode 8

Is that a little SMILE
I see there?
The Big Bang Theory Season 5, Episode 23

Her gentle SMILE ends all strife
Game of Thrones Season 3, Episode 6

I go ahead and SMILE
The Big Bang Theory Season 1, Episode 1