题目内容：

改成被动语态
They saw her go shopping on nanjing road yeaterday
she___ ___ ____go shopping on nanjing road yeaterday

优质解答

was seen to
主动的时候,see sb do sth 省略了to,被动的时候,to要加上
但是,如果是see sb doing,则被动还是was seen doing
这里是属于前者