She saw some boys ____ soccer on the playground when she was on the way to the classroomA.played B.to play C.playing横线上该填什么,为什么呢还有There are many children playing.为什么playing前没有加be动词,说出道理,出现这种情况的句子该怎么用,那种句子才用到这种情况真心求知,可是saw是see的过式呀
问题描述：
She saw some boys ____ soccer on the playground when she was on the way to the classroom
A.played B.to play C.playing
横线上该填什么,为什么呢
还有There are many children playing.
为什么playing前没有加be动词,说出道理,出现这种情况的句子该怎么用,那种句子才用到这种情况
真心求知,
可是saw是see的过式呀
答
C,考察了一个短语的用法：see sb doing sth指看到某人正在做某事
see还有一个用法：see sb do sth,指看到某人做某事的全过程
There be +sb doing sth,这是一个固定用法,意为：那儿有某人正在做某事