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.

We may be faced with an ALARMING number
of weddings soon.
Game of Thrones Season 4, Episode 5

...and I am producing sputum
at an ALARMING rate.
The Big Bang Theory Season 1, Episode 11

Although I do often deliver
ALARMING biopsy results to my patients.
The Big Bang Theory Season 8, Episode 7