The teacher said to the students ,"what did you do last night" 改为间接引语
问题描述：
The teacher said to the students ,"what did you do last night" 改为间接引语
the teacher asked the students what they had[ ] the night [ ] last.
答
The teacher asked the students what they had【done】 the night 【before】 last.为什么？？The teacher said to the students , "what did you do last night" 改为间接引语直接引语改为间接引语，就是把相关的【人称和时态】按照【直接引语变间接引语】的格式变化。asked是【过去时】，如果【现在】来转述当时的【昨晚】，肯定不能再说成是【昨晚】，你说是吗？按照格式就是：last night转换成 the night 【before】 last.。时态就是：退一步，即：【现在】转换成【过去】；【过去】转换成【过去的过去】。