He knows a lot of words, but has only limited ability to put them together to express his ideas. He can say "eat bread", "let's go home",and most other basic needs, but he never says something like "mom, don't go there, play with me". Some pronunciations are clear, some are not, and some are not understandable. He doesn't play with peers, although he often shows great interests to familiar adults (neighbors, friends), and makes eye contacts. He is very intimate to family members. He was born one month earlier, and has weak motor skills. He can jump, but never jumps down from a small step, and we have brought him to a motor training program now. He shows no interests in playing most toys, and is only interested in music toys and interactive toys (we bought him a toy phone that can randomly ask players to recognize the numbers, colors, and figures on it, he loves it and play very well, almost makes no mistakes!). He can follow most orders, but sometimes it is hard to manage him -- once he needs something he must get it almost without waiting. Please help me!