Really it depends. My 2 year old has been talking for awhile but only in recent months has he started to put actual sentences together. The more you talk to them and read to them the better they talk I believe.
It should be pretty much a constant process. Sometimes they won't pick up many new words for a while then they'll get a whole lot at once. My son started using more sentences right around the time he turned 1. He's 3 now and perfecting his grammar and such.
at 2:22 PM on Sep. 6, 2009
kids will talk when its time but some kids need help with it if you think your kid needs help talk to your doc snd they will tell you how to call for it