Possible PDD?

I was just wondering what is "normal" speech for a 2.5 year old boy.  My son does say short sentences, but it's not what I would consider spontaneous conversation.  He will say "I want to go outside" or "I want to carry it", but most of his sentences are sentences he's heard us say before like "How was your day?" and "I love you".  The other day, after rolling his truck down the stairs, he did come tell me "truck go downstairs".  If we point to daddy and say "who is this", my son will respond "daddy", but if we point to daddy and say "what is his name", my son will repeat the question.  He is use to me asking him about his day at school, so every day when I see him after work, he'll say "how was your day?" and "did you play outside" rather than telling me about his day and that he played outside.  If we are disciplining him and talking to him in a stern voice, he will avert his eyes and repeat what we are saying while we are saying it.  When he's not being disciplined, though, he has no problem with eye contact and he doesn't usually repeat our sentences when we talk to him.  He will answer our questions if the answer is no and he will respond to our questions about shapes, colors, numbers, and letters, but for most other questions, he just repeats the question.  I'm concerned that his repetition of what we are saying at times and the fact that he doesn't engage in spontaneous conversation about his day at school, etc, might mean there is a developmental problem.  Do most kids his age repeat what adults say?

[Mr_Questions]

Yes. It is verry normal. My son is 5 years old and looks like they are in the same situation. My son isn't what you would caa"fluent". He stutters some times. But it is normal speech bor a boy under the age of 6. After the age 6, it turns a bit more sirious. You just have to sit down with him and try to make him understand the correct way of speech. Showing some flash cards might help. Help him out by helping him pronounce the words or sentences.
                                                                                              - Mr_Questions