Question

He ________ more than 5,000 English words when he entered the university at the age of 15.

A. has learned
B. would have learned
C. learned
D. had learned

Answer 1

答案D
此题容易误选C,学生见到过去时间点，就会依据平时的经验选择一般过去时。其实此题应选D。掌握了5000多个单词并非在15岁上大学时发生，而是早在之前就完成了，过去的过去，所以要用过去完成时。此句话的汉语意思是：在他15岁上大学时，就已经掌握了5000多个单词了。