a. I __________ seen such a good harvest!
b. __________ I seen such a good harvest.
A. have never, Never have B. never have, Have never
C. have never, Have never D. never have, Never have
一般说来，以下否定词位于句首，句子要用倒装(部分倒装—-用一般问句的形式)：seldom, never, little, few, hardly, not, not until, in vain, in no way, by no means, on no account, no longer 等。如：
Never does he come late.
Little did he know that the police were after him.
By no means shall I go there again.
Hardly had he arrived at the station when the train began to leave.
Few students did they see in the classroom.
Not a word did I ever say to him.
Not until all the fish in the river died did the villagers realize how serious the pollution was.