The problem is that the amount of energy we get from corn-based ethanol isn't much more than the amount of energy that gets put into making it,so it's not really worth it. Tina?

这里的that gets put into making it应该是一个定语从句，that指the amount of energy, it指代enthanol, 请问get这里有种被动的意义，但是我在字典上没有找到相关条例，请问老师如何理解这个get,还有类似短语吗？get used to 算吗？