The ____ (miss)boy was last seen ____ (play)near the river .

问题描述:

The ____ (miss)boy was last seen ____ (play)near the river .
missing ; playing
不是see sb do sth看见某人过去或经常做某事,而see sb doing sth是看见某人正在做某事吗?这里也没有正在的含义啊,请详解这两个空为什么这么填,

The (missing) boy was last seen (playing) near the river .
失踪的那个男孩最后被人见到是在河边玩耍.
这里应该是用see sb doing,看见某人正在做.因为这里强调的是失踪前的那段时间,并非经常做某事.