My son is 2 years old. Should he be able to talk good?

At 2 my son had about 35 words and I was worried. His vocabulary really exploded at about 27 months and now he has over 300 words. You should consult his doctor about this because 11 words only seems a bit behind. He should be starting to try to put together two and 3 word phrases. Like I said, i would talk to his doctor and see if he has any concerns and if not than do not worry about it.