Father: I promised to buy you a car if you passed your examination, and you have failed. What were you doing last term? 父亲：我曾向你许诺，如果你考试及格就给你买俩小汽车，可你却未能做到。你上学期一直在干什么呀？ Son: I was learning to drive a car. 儿子：我在学开汽车。
