thereissth現在分詞

為There be 結構。there is sth doing 中文意思是有某事在做……

例如

There is a fine line between showing interest in what someone is doing and interfering in it.關心別人正在做的事情和進行干預之間存在著細微的差別。

There is a boring guy doing something boring.有一個無聊的人在做一些無聊的事情。