同学你好，该知识点来自沪江网校《英语零基础直达PETS三级/公共英语三级【年中特惠班】》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。

同学好：
Even if well rewarded for his new invention, the old professor would not sell it.
这里考查的其实是reward sb. for sth.的用法，“因...而奖励某人”。
这个句子的完整形式是：Even if he were well rewarded for his new invention, the old professor would not sell it.
“即使拿重金去换他的新发明（即使他因为自己的新发明被给予重金），这位老教授依然不会卖掉它。”
从句是被动形式，而且从句和主句的主语相同，所以省略了从句的主语和系动词，直接用过去分词rewarded 做了让步状语。

祝学习愉快！