帮我个忙 The police caught a man
网友回答
这是现在分词作定语的用法,表示主动用ing(现在分词）,表示被动用ed（过去分词）.此处等于（who was trying)
======以下答案可供参考======
供参考答案1:
应该是the police caught a man (who was) trying to...... 这里是省略 当时正在偷所以是trying
供参考答案2:
省略who is
所以原句应该是The police caught a man （who is）trying to get into a shop through the window.