题目内容：

大家帮我看看这两个英语句子哈~请问怎么把它改成现在分词结构?
1 when the detective climbed out of the widow,hr waved to his partner who was waiting for him in his car
2 to our great surprise ,we found people were surviving the earthquake.
作出后并请大家为我讲解一下,为什么这么做,这个现在分词在句子中充当的是什么成分.
由于时间很紧，好的追分！