My friend has returned from the UK.She ___ at Oxford for four years,during which we communicated wit

题目

My friend has returned from the UK.She ___ at Oxford for four years,during which we communicated with each other on the Internet.
A.studied B.has studied C.had studied D.has been 为什么选A不选C?

答案

C选项为过去完成时,通常表达是“过去的过去”,切记这一点.比如,He said that he had finished his job.这里完成工作在‘说’的过去,所以用过去完成时.在过去的一段时间内做了某事,直接用过去时就行了.