过去分词表被动与be done都可以表示被动,但在题目中则么区别?（本人英语较烂,请说的简单易懂一点）

是的,都可表被动,但有不同.v-ed 作过去分词,不能做句子中的谓语；它属于非谓语动词；在句中可做定语、状语、表语、补语.be v-ed 是被动语态,在句中作谓语.比较：This book was written by Luxun.这本书是鲁迅写的.-----谓语 Written by Luxun,this book is very interesting.由鲁迅所著,这本书很有趣.----状语 I have read this book three times written by Luxun.我已读过三遍鲁迅写的这本书.---定语 The cup is broken.杯子破了.----表语 I had my hair cut yesterday.昨天我剪了头发.----补语

在做选择的时候，你要看清句子到底缺少什么成分，如果句中不缺少谓语的就用过去分词，如：I like the watch given by you.如果缺少谓语的话，就要加上be动词，The work will be finished in three days.