说明
含否定前缀的句子的附加疑问句
核心问题
John was unfair, ____? A. was he B. wasn't he C. was John D. wasn't John
tag questions
我选了A,不知对否?
词典解答
不对。应当选 B。带有否定前缀的词虽然具有否定意义，但含有这种词的句子仍被看作是肯定句。上面的句子是肯定的陈述部分 + 否定附加疑问部分：
That is impossible, isn't it?
练习题
请做下面的英语试题：
He was unhappy about this, ____?
A. was it B. wasn't it C. was he D. wasn't he