题目内容
4.My uncle has been taught in this school _______ he was twenty years old.( )| A. | since | B. | for | C. | until | D. | after |
分析 我的叔叔从二十岁的时候就在这所学校教学.
解答 答案:A since意为"自从…以来";for意为"达到(多长时间)";until意为"直到…才";after意为"在…以后".根据"My uncle has been taught in this school"是从过去某时刻开始一直延续到现在的动作,所以要用since.故选A.
点评 首先要掌握since,for,until,after这四个连词的意思,然后结合具体的语句做出正确选择.
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