【典型考例】John and I____ friends for eight years. We first got to know each other at a Christmas party. But we_____ each other a couple of times before that.
A. had been; have met B. have been; have met
C. had been; had met D. have been; had met
【析】正确答案是D。句意是:约翰和我是8年的朋友了。我们第一次是在一词圣诞聚会上互相认识的。但是这那之前我们就已经碰过好几次面了。第一句指从过去延续到现在的状况,应使用现在完成时“have(has)+过去分词”,第二句表示在我们成为朋友之前过去的动作,即“过去的过去”,应使用过去完成时“had+过去分词”,因此本题的正确答案为D。