You're talking with a group of friends about your dreams. There is a reoccurring dream that happens to you sometimes. You describe it:
Every so often I'll have a dream where I'm being chased by some kind of monster.
determiners, dreams, progressive aspect, sometimes, will 
Your friend is from the southern part of the U.S. He says that he used to have a strong Southern accent growing up, but he tries to suppress it. Then he says:
But it still comes out from time to time.
When you're trying to hide something, but it shows accidentally, you can say that it has "come out". For example:
He tries to act like he's all tough, but after you get to know him a little bit, his sweet side starts to come out.
The truth will come out.
Things that often "come out" include:
"From time to time" means "sometimes":
From time to time, I'll get a question from a customer about whether they can pay by check.
I make mistakes too from time to time.
"From time to time" seems like it's less often than "sometimes".
You're in a conversation with a group of friends about your TV-watching habits. One person says that he prefers to
But sometimes you'll be flipping through the channels and come across something really interesting.
TV, habits, habitual, intensifier, progressive aspect, sometimes You're drinking with coworkers after work. You're gossiping about the director of your department. You feel like he doesn't notice you at all, and you give an example of this. You say:
Sometimes I'll run into him on the street, and he doesn't even acknowledge that I'm there.
complaining, phrasal verb, rude, sometimes, will 