问题补充:
When we saw the roadwith snow, we decided to spend the holiday at home.
A. block
B. to block
C. blocking
D. blocked
答案:
A. block
B. to block
C. blocking
(答案→)D. blocked
解析:根据句子结构可知,此处的block是非谓语,作road的宾语补足语,而同时road和block之前存在着被动关系,因此选择D项,句意为,当我们看到路被大雪挡住的时候,我们决定这个假期就呆在家里了。
【考点定位】考察非谓语动词。