670　 there be+名词+现在分词

◎ 本句型表示“有多少/什么人在做什么”，现在分词作名词主语的补足语。

There are some children playing on the river bank. 有几个儿童在河岸上玩耍。

There is a gentleman outside asking to see you. 外面有一个男士要见你。

Look out！There is a bus coming. 当心！有辆公共汽车开过来了。

There are some birds singing in the tree. 有几只鸟儿在树上鸣叫。

There will be hundreds of experts working on the project. 将会有数百名专家参加这项工作。