lesson 5 how many ? 多少,pen,ruler,pencil,crayon,pencil box,whats this ?,Its a pen .,pen,Its a pen .,whats this ?,Its a ruler .,whats this ?,whats this ?,Its a pencil box .,Its a crayon .,whats this ?,how many crayon do you have 你有多少支彩笔?,how many do you have 你有多少支刚笔?,how many do you have 你有多少支彩笔?,I have three books,how many do you have? 你有多少把尺子?,