题目
为什么选b不选a
---Hi,Nancy,I didn't know you had come back .So have you graduated from college?
---Yes.I（ ） French for four years in Dalian University of FOreign languages.
a.had studied b.studied
---Hi,Nancy,I didn't know you had come back .So have you graduated from college?
---Yes.I（ ） French for four years in Dalian University of FOreign languages.
a.had studied b.studied
提问时间：2021-03-18
答案
这里说的是毕业以前曾经学过,也就是过去的一段时间曾经学过,而不是毕业前再往前追朔一段时间学过,过去时态studied正是指的前者,而had studied却指的是后者.
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