问题补充:
When I passed this afternoon, I saw a little boy was lying on the grass, his hands under his head.
A. having crossed
B. crossing
C. crossed
D. to cross
答案:
A. having crossed
B. crossing
(答案→)C. crossed
D. to cross
解析:句意:当我今天下午路过的时候,看见一个小男孩躺在草地上,他的双手交叉放在头底下。这里整个句子一个when引导的时间状语,I saw a little boy was lying on the grass这是主句;his hands crossed under his head是独立主格结构,cross ones hands, 交叉手臂;这里his hands与cross之间是被动关系,独立结构sth+done,这里的sth与done之间是被动关系,故选C。