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.

It would help if you stopped telling me
I have a textbook CERVIX.
The Big Bang Theory Season 10, Episode 4

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...as he likes to say, he\'s \"at your cervix. \"
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...as he likes to say, he's "at your CERVIX. "
The Big Bang Theory Season 6, Episode 18