He ________ more than 5, 000 English words when he entered the university at the age of 15.
A.has learnedB.would have learnedC.learnedD.had learned在线课程D
解析:
解析:根据句中 when引导的时间状语从句知“entered”为一般过去时,而“学习五千多个英语单词”明显发生在“入大学”之前,故主句时态应为过去完成时.命题立意:本题考查了动词的时态.要把握每个时态的具体意义.过去完成时表示“过去的过去”;
现在完成时强调对现在的影响;
一般过去时态是说明一个过去的事实;
而过去将来完成时表示在过去某个时候将会发生的事情.
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