问题补充：
But for the help of my English teacher, I the first prize in the English Writing Competition.
A. would not win
B. would not have won
C. would win
D. would have won
答案：
A. would not win
(答案→)B. would not have won
C. would win
D. would have won
解析：考查虚拟语气。根据句意可知，此处是对过去的虚拟，主句要选用would/could/might have done结构。But for意为要不是
句意为要不是我英语老师的帮忙，我不会在英语写作比赛中获得第一名(事情已经发生）
