请英语高手们来看看这道虚拟句.
问题描述：
请英语高手们来看看这道虚拟句.
Mr.Green________my letter,otherwise he would have replied before now.
A,must have received B,must have failed to receive C,must receive D,must fail to receive
otherwise 的虚拟句一般不是其前的句子用一般陈述语气,后用虚拟语气吗?那应该选D啊,
答
答案是：B.完整的句子是：Mr.Green must have failed to receive my letter,otherwise he would have replied before now.实际上,这句话分为两部分,一是前一句,这句和虚拟语气没有关系,是表示说话者带有较为肯定的推...