Question

【题目】He taught us how to use this machine today. (改为一般疑问句)
he you how to use this machine today?

Answer 1

【答案】Did；teach
【解析】根据taught句子时态是一般过去时，谓语是行为动词，变疑问句时借助于助动词did，谓语动词用原形，taught的原形teach，所以答案是：Did; teach。