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.

One of them is BOUND to screw up,
then I'll tell my parents about you.
The Big Bang Theory Season 4, Episode 24

We wanna join forces.
You're BOUND for glory.
Westworld Season 2, Episode 3

...would I be BOUND by
Asimov's Three Laws of Robotics?
The Big Bang Theory Season 1, Episode 3

You know,
it's BOUND to get better, right?
Breaking Bad Season 5, Episode 13

At some point,
they're BOUND to lock horns.
The Big Bang Theory Season 6, Episode 9