同学你好，该知识点来自沪江网校《新概念英语2、3、4册连读【天猫特惠】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
没有省略，原句是As Uncle Bear is poor and fat，这里是一种倒装形式。
as / though引导的让步从句必须表语或状语提前(形容词、副词、分词、实义动词提前)。 　  
Child as /though he was, he knew what was the right thing to do. 　　
= Though he was a small child, he knew what was the right thing to do.

祝同学学习进步~