He was……此类陈述句改为一般疑问句为Was he ……
①He was watching TV when his father got home.（改为一般疑问句）
Was he watching TV when his father got home?
解析：过去进行时变一般疑问句的时候，直接将系动词提前即可。
②He was at the police station yesterday.
改为一般疑问句：
Was he at the police station yesterday?
1，谓语动词是be动词、助动词、情态动词时，只要直接把这些词置于句首，句末改成问号。2、谓语动词是行为动词时，必须在句首加上助动词Do、Does（三单）、Did（过去式）加上这些助动词后，句子中谓语动词必须用原形，句末改成问号。
