At what age do you expect children to begin speaking in complete sentences?

Possible 2 years: 2 year old may make simple 2 word sentences such as "up please" or "no thank-you." by three years they are typically forming sentences of 3 to 4 or 6 words. Talk with your child lots and role model simple easy to understand sentences. The more words and language they are exposed too the faster they will develop their own.

2 years old: A "complete sentence" is a little different to different people, but generally we want 2 year olds to be able to say 2 words together and have them be related (doggy up!). By 2 1/2 to 3 y we would expect them to say a more complete sentence like what most people think of (mommy, where go my lollypop?). Bilingual children may speak a little later due to the brain learning 2 words for the same thing.