Asked about his address(＝When he was asked about his address)，the boy didn't respond.

问及他的地址时，小男孩没有作答。

2．过去分词作原因状语，在句中相当于一个原因状语从句。

Encouraged by the progress he has made(＝As he is encouraged by the progress he has made)，he works harder.

由于受到所取得的进步的鼓励，他工作更努力了。

3．过去分词作条件状语，在句中相当于一个条件状语从句。

Given more time(＝If they were given more time)，the trees could grow taller.

如果再多给一点时间，这些树会长得更高。

Heated to a high temperature(＝If it is heated to a high temperature)，water will change into vapor.

如果加热到高温，水就能变成蒸气。

4．过去分词作让步状语，在句中相当于一个让步状语从句。

Though warned of the storm(＝Though they had been warned of the storm)，the farmers were still working in the fields.

尽管被警告过有暴风雨，农民们仍然在田地里劳作。

5．过去分词作方式、伴随状语，在句中相当于一个并列句。

Followed by a group of students，the teacher entered the classroom.

＝The teacher entered the classroom and he was followed by a group of students.

老师走进教室，后面跟着一群学生。

注意：过去分词(短语)作状语时，前面有时可以加上when，if，while，though，even if，until，unless等连词，这种结构可以看作是一种省略的状语从句(省略部分多为"主语＋be的多种形式")。需要注意的是，省略的主语必须和主句的主语相同或为it。

Even if invited(＝Even if I'm invited)，I won't take part in the party.

即使受到邀请，我也不会参加这个聚会的。

拓展　有些过去分词因来源于系表结构，作状语时不表被动而表主动。这样的过去分词及短语常见的有：lost迷路，沉溺于；seated坐；dressed in穿着；tired of厌烦；faced with面临；accustomed to习惯于等。

Lost in deep thought，he didn't hear the sound.

因为沉溺于思考之中，所以他没听到那个声音。

Dressed in a new dress，she looks very beautiful.

穿着一件新衣服，她看上去很漂亮。

二、过去分词作状语时的位置

过去分词作条件、原因及时间状语时，通常放在句首；作伴随、结果状语时，通常放在句末