One of the things that made me long --- back in prison was t

make是个使役动词,翻译成“使谁去做某事”,这样的词还有let,have。。。它们的用法是make/let sb do sth。但是在被动语态里“谁被让去做某事”,要用动词不定式来表示,即sb be made to do sth。这句话用了被动语态,“我被关回监狱的原因是。”所以用的是不定式