总的来说他们都是表示被动,前者是做后置定语或者是表示一种状态.如;The thief was caught with his hands ,fastened back.是前者. 手和捆是被动. The building which is being built is our new classroom.是后者.又如,the man you caught is innocent.人和抓是被动关系. Given a sound beat,the boy lowered his head with shame. the boy 和give 是被动的关系.后者是被动语态的进行时态.找到主,谓 ,宾即可.
Good done!The work is being done.单独的done通常是省略形式的感叹语，而后者加Be动词是被动进行时的表达方式。
being
done表示正在发生的被动动作，所以在正在发生且被动的情况下使用
你买本语法书看看就知道了
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