What would have happened _____ ,as far as the river bank?

题目

What would have happened _____ ,as far as the river bank?
A Bob had walked farther
B if Bob should walk father
C had Bob walked father
D if Bob walked father
哪个?help and explain~thank you

答案

正确答案是C!其实原句也可以这样说：What would have happened if Bob had worked father,as far as the river bank?翻译的意思就是：如果Bob走的再远点又会是什么情况呢?比方说走到河岸旁边?这个就是虚拟语气啦,因...