题目内容

7．Could you tell me      a moment ago？（　　）
A．what were they talking aboutB．what are they talking about
C．what they were talking aboutD．what they are talking about

分析 你能告诉我刚才他们在讨论什么吗？

解答 本题要填的是宾语从句，宾语从句中应该用陈述语序，
即应为引导词what+主语+谓语，从而排除A、B；
根据a moment ago，知从句动作发生在过去，应用一般过去时．
故选：C．

点评 本题考查宾语从句的语序和时态．宾语从句通常是陈述语序，引导词what+主语+谓语，宾语从句时态原则：主现从随便，主过从必过，真理规律永一现．

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