The environment problems facing today's world are so great that there is little ordinary people can do to improve the si
问题描述：
The environment problems facing today's world are so great that there is little ordinary people can do to improve the situation.
facing前面没有be动词为什么可以用ing形式?
答
这是非谓语动词的用法,facing today's world作定语,修饰problems,相当于that are facing today's world的省略.更多的非谓语动词知识,可以看下魏训刚的 高考语法完全突破 视频教程.