Question

【题目】I have studied English_______.

A.three years agoB.for three yearsC.for three year’sD.since three years

Answer 1

【答案】B

【解析】

句意：我已经学习英语三年了。

A. three years ago三年以前，用一般过去时；B. for three years三年，用现在完成时；C. for three year’s错误；D. since three years错误。根据have studied现在完成时，故选B。