用There be+ n.+V.ing+sth.造3个句子
问题描述：
用There be+ n.+V.ing+sth.造3个句子
答
There is a cow eating the grass.有一头牛在吃草.
There are some birds drinking water.一些鸟在喝水.
There is a dog running a mouse.一只狗在追老鼠.