How do you check my grammar?

Depending on the computer you have, there may or may not be a way to check grammar. I'm trusting that you have a grammar-check enabled computer. If you open up the application you use for text, documents, etc., there should be a toolbar. The toolbar is always full of options to make your text the way you want it. I mean really, the possibilities are close to endless. It's glorified with tools to help you, preclassified. If you have a computer like mine, there should be a section in the toolbar titled spelling/grammar. Open that up and wherever you would usually find the spell check tool, grammar check should also be available.

BEFORE:

I stare at what looks like a alligator.

AFTER:

I stare at what looks like an alligator.

Hope this helps!