Tom looking his photographs 2 p.m.yesterday afternoon连词成句,答案为什么不是Tom was looked at

Tom looking his photographs 2 p.m.yesterday afternoon连词成句,答案为什么不是Tom was looked at

题目
Tom looking his photographs 2 p.m.yesterday afternoon连词成句,答案为什么不是Tom was looked at
his photographs at 2 P.M.yesterday afternoon,而Tom was looking at his photographs at 2 P.M.yesterday afternoon
答案
如果是was looked at是be动词加动词过去分词形式,表被动.这里不需要被动语态.因为是昨天下午两点的时候,表过去某个时间正在做某事,需要用过去进行时,用be动词的过去式加doing的形式.
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