过去分词做原因状语
过去分词做原因状语，相当于as，since，because引导的原因状语从句，这类状语多放在句首
Encouraged by the progress he has made,he works harder.=As he is encouraged by the progress he has made, he works harder.由于受到自己所取得的成绩的鼓舞，他工作更努力了
过去分词做时间状语
过去分词做时间状语相当于when引导的时间状语从句，如果分词表示的动作与谓语动词同时发生，可在分词前用when，while，until等其时间意义更明确
Seen from the top of the hill, the park looks more beautiful.=When it is seen from the top of the hill, the park looks more beautiful.当从山顶往下看时，这座公园看起来更加漂亮
When heated,water can be changed into steam.水加热后可以变成水蒸气
过去分词做条件状语
过去分词作条件状语，相当于if，unless引导的条件状语从句
Some medicines, wrongly taken, can kill a person.=Some medicines, if they are wrongly taken, can kill a person.有些药物如果被误用,能使人死亡。
过去分词做方式或伴随状语
The teacher came in, followed by his students. 老师进来了，后面跟着他的学生。
She sat by the window, lost in thought.她坐在窗前，陷入沉思。
过去分词做让步状语
Although exhausted by the climb, we continued our journey. =Although we were exhausted by the climb, we continued our journey. 我们虽然爬得很累，但仍然继续我们的旅程。
Much tired, he still kept on working.=Though he was tired, he still kept on working. 尽管他很累，他仍然继续工作着。
过去分词作时间、条件、原因、让步等状语时，可转换为对应的状语从句。
Questioned by the police about the fire, the man became tense.
→The man became tense when he was questioned by the police about the fire.
Written in a hurry, this article was not so good.
→As it was written in a hurry. this article was not so good.
过去分词作状语,前面可以加 when、while、if、un less、once、as if、though等连词,构成“连词十分词”形式。
Though warned of the danger. he still went skat ing on the thin ice.
过去分词与句子的主语之间存在逻辑上的动宾关系，现在分词与句子的主语之间存在逻辑上的主谓关系。试比较:
Seen from the top of the tower, our city looks very beautiful.
Seeing from the top of the tower, we can get a wonderful view of the city.
过去分词作状语时，分词的逻辑主语与句子的主语要一致。
[误]Given another chance, the job could be better done.
[正]Given another chance, I could do the job better.
再给一次机会，我可以把这项工作做得更好。
