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导语：小编为大家收集和整理了大量的高二英语知识点，以便考生在高考备考过程中更好的梳理知识，轻松备战。 Worried about the journey, I was unsettled for the first few days. Well-known for their expertise, his parents company .. Confused by the new surroundings, I was hit by the lack of fresh air. Exhausted, I slid into the bed and fell fast asleep. 过去分词作状语：过去分词作状语时，说明动作发生的背景或情况，其等同于一个状语从句。vt 过去分词作状语时与主句主语构成被动关系，表示被动和完成，vi 过去分词表示状态或动作的完成。 Heated , water changes into steam . The professor came in, followed by a group of young people . 1 作原因状语，等于as / since / because 引导从句 Moved by what she said ,we couldnt help crying . = ( As we are moved by what she said 2 作时间状语，等于when 引导时间从句，如果分词表示的动作与谓语的动作同时发生，可在分词前加when/ while / until 等使时间意义更明确。 When heated , water can be changed into steam . Seen from the hill ,the park looks very beautiful .= ( When the park is seen from the hill | 
