the photocopier broke down as 500 copies being made.
參考答案:the photocopier broke down as 500 copies were made.
这里as是 当。。。的时候的意思，相单于when，是连接时间状语从句的引导词，所以从句里边不能是非谓语形式，而应该是谓语形式，所以being改成were。。。
the photocopier broke down as 500 copies being made.
參考答案:the photocopier broke down as 500 copies were made.
这里as是 当。。。的时候的意思，相单于when，是连接时间状语从句的引导词，所以从句里边不能是非谓语形式，而应该是谓语形式，所以being改成were。。。