要弄懂为什么用过去分词seated,首先要知道seat作动词用时是个及物动词,而且它的宾语是人不是物。如:祈使句Be seated please(请坐)的主语是省去了you。即:you are seated. 或者Seat yourself. 再如:I saw him seated on a sofa. (我看到他坐在沙发上。),也是人作seat的宾语。
追答所以说人和seat之间是逻辑上(意思上)是被动关系。如果换上sit , 那就要用现在分词sitting, 即:its owner sitting in it playing with his children every afternoon.
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谢谢好评