问题补充:
Can you tell me when I called you?
A. what were you doing
B. what are you doing
C. what you were doing
D. what you are doing
答案:
A. what were you doing
B. what are you doing
(答案→)C. what you were doing
D. what you are doing
解析:此题重点考查宾语从句的时态和语序问题,无论哪种句式结构充当宾语从句都要用陈述句语序,从句的时态要和主句的时态保持一致。因主句的谓语动词是现在时从句的谓语动词可要用相应的任何时态。