contestada

Hi !

I'm brazilian and I don't speak English, so sorry me for my bad grammar :/

I've a doubt: when I've to put in the "to" behind a verb ?
I see a lot of verbs who doesn't has the "to" behind its.
And also have verbs that has an "ing" at the final. Why have I to put
"ing" and don't "to" ?

Anyone can help me ?

Thank you too much ! :]