问题补充:
They so tired if they for a whole day.
A. wouldn’t feel, didn’t walk
B. wouldn’t feel, weren’t walking
C. wouldn’t be feeling, weren’t walking
D. wouldn’t be feeling, hadn’t been walking
答案:
A. wouldn’t feel, didn’t walk
B. wouldn’t feel, weren’t walking
C. wouldn’t be feeling, weren’t walking
(答案→)D. wouldn’t be feeling, hadn’t been walking
解析:情景对话句意为:如果他们不走一整天,他们就不会感到累
If引导的虚拟语气,从此题可判断为对过去事件的虚拟,故从句的时态应用过去完成进行时,主句用would+动词原形