问题
选择题
______ from the top of the tower, the south foot of the mountain is a sea of trees.
A．Seen
B．Seeing
C．Having seen
D．To see
答案
答案：A
这题考查过去分词做状语的用法：动词see和主语the south foot of the mountain之间是被动关系。所以用过去分词。句意是：从塔顶上看，山脚的南面是一片树的海洋。选A。