George would certainly have attended the meeting, .
A. if he didn’t get a flat tire
B. if the flat tire hadn’t happened
C. had he not had a flat tire
D. had the tire not flattened itself
网友回答
A. if he didn’t get a flat tire
B. if the flat tire hadn’t happened
(答案→)C. had he not had a flat tire
D. had the tire not flattened itself
解析:表示对过去情况的假设,主句动词形式为would(should,could,might)+have+过去分词,条件句为过去完成式,if可以省略,但要把had提前主语前面。 B、 D的表达不符合英语表达习惯,所以C是正确答案。