英语听力论坛's Archiver

x-ace 发表于 2009-12-25 12:52

连词+分词(短语)

  有时为使分词短语与主句关系更清楚,可在分词前加连词。 连词有: when,while,if though,after, before, as. 但分词的主语和主句的主语必须为同一个,如:
  While waiting there, he saw two pretty girls come out of the building.
  waiting 和saw 的主语相同。

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