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.

that doesn't spend? Huh?
The TREE falls in the forest...
Breaking Bad Season 2, Episode 12

Hey, hey. ljust found a farm where they
let you chop down your own TREE.
The Big Bang Theory Season 10, Episode 12

traveling to the great ash TREE, guests of Jarl Borg.
Vikings Season 1, Episode 9

of who's allowed in his
TREE fort if fe ever gets one.
The Big Bang Theory Season 7, Episode 6

Used to be you couldn't find a
TREE within a mile of the Wall.
Game of Thrones Season 3, Episode 6