Question

麻烦各位讲解一道英语选择题，谢谢

After I had walked for six hours, ___.
A.I had been tired out B.I was tired out
C.I'll be tired out D.I would have been tired out

选什么答案,为什么？

Answer 1

什么乱七八糟。。。。明显是B。
走了6个小说后，我累垮了。 had walked 自然是过去完成时，正因为有了这个完成动作，我才有后面的累垮。I was tired out完全是一句正常的过去时的句子 。After I had walked for six hours不过是个从句告诉你此条件发生了而已。
别被had吓唬掉了，它们老跟过去时一起蒙人~

Answer 2

After I had walked for six hours,I had been tired out .

选A.
因为说, 我走了6个小时后, (这里用的是过去完成时---had p.p----)
然后就要说, 我已经非常疲惫了, (所以要用过去完成进行时)

因为事情发生在过去.而且要表达的是完成后的某种状态,

所以要用过去完成进行时. 故选A

Answer 3

D
主句现在完成时，从句过去完成时

Answer 4

选B
从句过去完成时，主句过去时

Answer 5

B