---Excuse me .Could you tell me__________________________? -
4个回答

不是,整个句子你怎么知道是过去时态呢.从何得出?

除非像

I【 didn't】 know what was the matter with the machine.

Could you tell us what was wrong/the trouble with him 【yesterday】?

这样的才行

没有准确的时态标志不要乱来呀~

这里的could是表示提问者的委婉,礼貌,不是过去式..= =