Section_ⅢGrammar-_过去分词作状语

　　语法图解

　　探究发现

　　1．①Worried about the journey, I was unsettled for the first few days.

　　②Given better attention, the trees could grow better.

　　③Described as an enormous round plate, it spins slowly in space to imitate the pull of the earth's gravity.

　　2．①Hit by a lack of fresh air, my head ached.

　　＝Because I was hit by a lack of fresh air, my head ached.

　　②I stared at the moving model of the waste machine, absorbed by its efficiency.

　　＝I stared at the moving model of the waste machine, and was absorbed by its efficiency.

　　3．①When offered help, one often says "Thank you" or "It's kind of you."

　　②The research is so designed that once begun nothing can be done to change it.

　　[我的发现]

　　(1)作状语用的过去分词(短语)和句子的主语之间有逻辑上的动宾关系，或称为被动关系。

　　(2)第一组句子中的过去分词(短语)分别在句子中作：①原因状语；②条件状语；③伴随情况或方式状语。

　　(3)比较第二组句子可知，作状语用的过去分词(短语)可以转化成相应的状语从句或并列句。

　　(4)从第三组句子可知，表示时间、条件、方式、比较或让步的状语，可用"从属连词＋过去分词"结构。可用于该结构中的从属连词有：when, once, while, if, unless, as if, as, than, though, although等。

　　一、过去分词作状语的类型

过去分词作状语，可以表示时间、让步、条件、原因、方式和结果，相当于一个状语