【題目】My brother _______ as an engineer since he returned from America years ago.

A.has workedB.had workedC.was workingD.will work

【答案】A

【解析】

句意：我哥哥幾年前從美國回來后一直當工程師。

A. has worked現(xiàn)在完成時；B. had worked過去式完成時；C. was working過去進行時；D. will work一般將來時。短語work as…表示作為……；根據(jù)since he returned from America years ago.可知，這里是since引導的時間狀語從句，主句用現(xiàn)在完成時，其結(jié)構(gòu)式have/has done的形式。主語是單數(shù)，助動詞用has。根據(jù)題意，故選A。

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