first of all,he wrote out a long list of all the foods which were forbidden.为什么最后用were ……为什么最后用were forbidded 为什么不用were forbade?

first of all,he wrote out a long list of all the foods which were forbidden.为什么最后用were ……
为什么最后用were forbidded
为什么不用were forbade?

看清楚,是forbidden,不是forbidded.前一个是形容词,“禁止的”的意思.