On being introduced to each other, men should shake hands.
这句话怎么样理解，和划分句子结构。
主如果是 On being introduced to each other，该怎么样剖析和理解？谢谢！
此句中的“on + 动名词”结构表示时间，意思是“当……的时候”“一……就”。又如：
On entering the room, she saw him. 她一进这个房间便看到了他
On receiving the news, she fell into a dead faint. 听到消息，她昏死过去。
On hearing the crash, he rushed out of the house. 他一听到轰隆声，便冲出房屋。
你的句子中的动名词为被动式，意思是“当被……的时候”，你的句子意思是：
On being introduced to each other, men should shake hands. 当让人介绍彼此认识时，男性们应该握手。
剖析：
状语：On being introduced to each other
主语：men
谓语：should shake
宾语：hands
更多类似例句如：
On being introduced, British people often shake hands. 英国人被介绍给其他人的时候常常和他们握手。
On being informed the flight would be delayed, we made other arrangements. 在大家得知飞机要推迟起飞后，大家另作了安排。
On being shown this book, no one would believe that it was written by a ten-year-old girl. 看到这本书，大家都不会相信是一个十岁的女生写的。
