Not knowing whether he's dead or alive is a terrible feeling.求这句话语法详解!

Not knowing whether he's dead or alive is a terrible feeling.求这句话语法详解!
Not knowing whether he's dead or alive is a terrible feeling.求这句话语法详解!

Not knowing whether he's dead or alive is a terrible feeling.求这句话语法详解!
主语:【Not knowing whether he's dead or alive】
谓语：【 is】
宾语：【 a terrible feeling】
还有问题可以问我~

不知道他是死是活的感觉很可怕
Not knowing whether he's dead or alive
动名词做主语