问题
选择题
—I’ve_____the bike_____a year.
—Is it still new?
A. had,for B. bought,for C. had,since
答案
答案：A
题目分析：句意：我买这辆自行车5年了。它仍然是新的吗？for 后接一段时间谓语动词必须有延续性，所以要用延续性的动词。buy改为have，故选A
点评：非延续性动词向延续性动词的转变熟记一下几个：
leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, leave --- be away from, fall asleep --- be asleep