there be 存现句的伴随状语

Theres a boy reading a book.

there is a radio broadcasting the news.

因为前面已经有be 动词了，所以为了表达其他的动作，用非谓语动词即分词做状语或定语。

this is a photo taken by Johnson.

Could there be a mountain more precipitous than this?

山之险峻，宁有逾此？

Can there be a worse or more heartless boy than I am anywhere?

还有比我更坏、更没心没肺的男孩吗？

All win the lottery, but how can there be such a big difference?

都是中大奖，怎么就有那么大的差别呢？

There be Punch-and-Judy shows, and monkeys—oh such antic creatures!

有潘趣傀儡戏，还有猴子——哦，多么滑稽的动物！