see sb. do 的 宾补.
变被子动时,把to补充回来了.
不看成是目的状语是因为：
He was seen to come upstairs
他被看到上了楼. 你并不知道他的目的就是“上楼”
只是：他被看到（上了楼）,括号补充“他被看到”这一层意思,使之更完整.
He wa seen to come upstairs 中的 to come upstairs 为什么不能看成目的状语呢
2个回答
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