Question

there is a teacher in the classroom改为特殊疑问句？

Answer 1

改为特殊疑问句，答案很多，
改疑问句的基本步骤，
第一步:确定提问部分，是对主语，谓语，宾语，定语（状语）哪一部分提问。
第二步:该句对地点状语提问，
where is a teacher?

Answer 2

改为：Is there a teacher in the
classroom?

Answer 3

Is there a teacher in the classroom？