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介词可作不同的状语，比如有时间状语，条件状语，结果状语……英语网为您整理介词作状语的知识点： 一、时间状语 Hearing the news, he jumped for joy. 听了这消息时高兴得跳了起来。 Asked who he was, he made no reply. 当问到他是谁时，他没作回答。 上面两句中的分词短语均用作时间状语，均可改为时间状语从句，其中现在分词短语hearing the news相当于when he heard the news，过去分词短语asked who he was相当于when he was asked who he was。 二、条件状语 Working hard, you will succeed. 如果努力工作，你就可以成功。 Compared with you, I still have a long way to go. 跟你比较起来，我还差得很远呢。 两句中的分词短语均用作条件状语，其中第一句中的现在分词短语working hard相当于if you work hard，第二句中的compared with you相当于if I was compared with you。 三、原因状语 Being sick I stayed at home. 我因病呆在家中。 Much discouraged，she moved on to London. 她很沮丧，搬到了伦敦。 两句中的分词短语均用作原因状语，其中现在分词短语being sick相当于as he was sick，过去分词短语much discourage相当于as she was discouraged。 | 
