A young man and a young woman were sitting behind me.They were talking loud

A young man and a young woman were sitting behind me.They were talking loud
sitting talking这二个词为什么用现在分词形式?
英语人气:958 ℃时间:2019-08-20 18:55:00
优质解答
were + 现在分词 过去进行时
表示过去某一时间正在进行的动作
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