题目内容
3.Tony ________ for the company as an engineer for two decades.Now he teaches mechanics in Peking University.( )A. | has worked | B. | worked | C. | is working | D. | had worked |
分析 Tony在这家公司曾经当了20年的工程师.现在他在北京大学教力学.
解答 答案是B.考查时态.A 是现在完成时态;B 是一般过去时态;C 正在进行时;D 过去完成时态.句意:Tony在这家公司曾经当了20年的工程师.现在他在北京大学教力学.根据第二句可知托尼在公司上班发生在过去,故选B.
点评 解答此类题目,首先要掌握时态的用法,明确句意,然后根据相关语法选择正确的答案.
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