1.They visited their teachers.(变疑问句) 2.He went shopping last month.(变疑问句）
问题描述：
1.They visited their teachers.(变疑问句) 2.He went shopping last month.(变疑问句）
答
1.、Did they visit their teacher?
2、Did he go shopping lat month?
答
大体上来说，疑问句可分为一般疑问句和特殊疑问句两种，而像你提出的问题可以有很多种解答方法以下给你列举一些：一般疑问句：1、Did they visit their teachers?2、Did he go shopping last month?特殊疑问句的提问对象很多，主谓宾都可以，例如：对谓语提问1、What did they do?2、What did he do last month?对主语提问1.Who visited their teachers?2、Who went shopping last month?对宾语提问1、Who did they visited?2、Where did he go last month?由于第二题还包括了时间状语，对此也可以进行提问When did he go shopping?提问可以有很多种，但要注意时态和引导词。
答
1.Did they visit their teachers?
2.Did he go shopping last month?
希望能够帮到你!