He sat down and had a test.sat本身就已经是动词了,down也是,两个动词怎么可能在一起?

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He sat down and had a test.sat本身就已经是动词了,down也是,两个动词怎么可能在一起?

Down 是一个方向类副词,向下的意思.休饰动词当然用副词,没错