请问一下。On one campus, students use Wi-Fi to fire off instant messages, review their homework assignments, and check their bank balances. Just nine miles down the highway, another university had been feeling a bit of a technology inferiority complex. To compensate,it spent tens of thousands of dollars to give every one of its incoming freshmen a free Apple ipa.
这是我从课本中选的一段(有点长,还请看看),其中一句用了had been为过去完成进行时,可在这一句我并没有找到参照时间,所以请老师们看看。 先谢谢了!