be+过去分词就是被动语态
楼上所说的 主系表结构 I was surprised.

实际上是 动词surprise的被动语态形式
surprise 意思是 使……感到吃惊
本质上也是被动语态
这样使用过去分词表被动
I want a simplified version.是这样得来的:
I want a version. The version is simplified. 先是两个简单句
I want a version which is simplified. 合并成定语从句
I want a version simplified. which is 可以省去
I want a simplified version. 放在名词前面才是要表达的意思(我要简体版本)
如果是I want a version simplified.
可看作I want a version to be simplified. 去掉to be的简写(意思是 我要这个版本变成简体)
就不是I want a simplified version. 的意思了
可以这样掌握现在/过去分词
英语被动语态
被动句英语为passive sentence。
例句:
1、我们在学习英语语法、动词、条件句、被动句和主动句等。
We were studying English grammar, the verbs, the conditionals, the passive and the active, etc.
2、“Catrin告诉我”是主动句,“我被Catrin告诉了”是被动句。

Catrin told me' is an active sentence, and 'I was told by Catrin' is passive.
3、本文介绍宜宾方言的被动句和处置句。
The paper describes the passive and disposal constructions of Yibin dialect in Sichuan province.
4、较之主动句,被动句有着自己独特的语用价值。
The passive sentence has special pragmatic functions vis - a - vis the active sentence.
被动语态分为
1、结构被动,就是从结构上就可以看出是被动的,最常见的是be + done ,
如 the tree is cut down by the man
2、意义被动,就是只能从意义上判别被动的,
如 the pen writes well ,笔写起来很舒服。
一般被动语态中,以结构被动为主。
3、过去分词就是be+done中的done,如give、gave、given中的given
定语是修饰名词或代词的成分,分为前置定语和后置定语
一般解释为。。。。的+(名词或代词)
如 a man :冠词作前置定语
two men:数词作前置定语

happy students:形容词作前置定语
a running boy :分词作前置定语
a book on the desk :介词结构 on the desk作后置定语
a man who has a car:定语从句作后置定语
等


