After three months 时间状语t
he workers 主语
reported 谓语
that being away from the office was not at all productive to their work.宾语从句
being away from the office 做宾语从句里的主语
was 做宾语从句里的谓语
productive 做宾语从句里的表语宾语从句里面没宾语吗没有，该宾从里 只有主语 谓语 表语 状语