Onweekends,there are often many people_____(lie)on the beach.为什么要动词加ing帮忙解答一下,often不
问题描述：
Onweekends,there are often many people_____(lie)on the beach.为什么要动词加ing帮忙解答一下,often不
答
There be+ sb doing sth······为常见句型 often只起到副词修饰lie的作用.