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题目
When he entered the classroom,he was some parenrs ___ at the back of it.
为什么用seated 不用seating
打错了,应该是he saw some parents ___ at the back of it.

提问时间:2021-01-23

答案
be seated 表示就坐的意思.原题:When he entered the classroom,he saw some parents seated at the back of it.因为seat 当动词用是 使…就坐.原句seat 没有宾语部分,所以用过去分词.如果是sit ,则用sitting....
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