什么叫过去分词短语做状语

Question

如题所述

Answer 1

过去分词兼有动词､副词和形容词的特征。 过去分词作状语时，表示被动的或已完成的动作，在句中可作时间､原因､条件､让步､方式､伴随状语等。
过去分词(短语)作状语时，其逻辑主语通常就是句子的主语。过去分词(短语)作状语一般都用逗号同其它成分隔开。
1. 作时间状语时，可转换为when或while等引导的从句，通常放在句首。如：
Seen from the top of the hill (= When it is seen from the top of the hill), the school looks like a big garden.
2. 作条件状语时，可转换为once, if或unless等引导的从句，一般放在句首。如：
Given more attention (= If it was given more attention), the fire could have been avoided.
3. 作原因状语时，可转换为because, as或since等引导的从句，多放在句首。如：
Encouraged (= As she was encouraged) by the teacher, the girl was very happy.
4. 作让步状语时，可转换为though, although 或even if引导的从句，常放在句首。如：
Left (= Although she was left) alone at home, Jenny didn’t feel afraid at all.
5. 作方式或伴随状语时，常可转换为并列分句，可位于句首或句末。如：
Surrounded by his students, the teacher went into the lab. (= The teacher was surrounded by his students and he went into the lab.)
6. 过去分词(短语)作状语时，有时为了强调，前面可带连词when, while, if, though, as if, unless等。如：
When given a physical examination, you should keep calm.