Stepping carelessly off the pacement,______.
问题描述：
Stepping carelessly off the pacement,______.
A.the old man was knocked down by the bus
B.the bus knocked the old man down
这题为什么选B,stepping这类加ing的词不是指物吗?就像exciting和excited.
还有step
答
这里是省略主语的状语前置,要求和后面的主句主语一致
step off,这里应该是顺着…前进