First of all, yourself must be able to file as Resident Alien before you can claim dependent.
For the rest, please see this post from me a while back, and the replies for it. Should answer your question.
http://web.wenxuecity.com/BBSView.php?SubID=law&MsgID=39804
Please also check publications and instruction files yourself to understand it fully.
這個是在發上麵那個貼之前的一些討論,以作參考。
http://web.wenxuecity.com/BBSView.php?SubID=law&MsgID=39744