在一般过去时的句子中,如果句子中含有was,变成疑问句时就用was,如果没有,就用did或者其他助动词或情态动词。
1、一般疑问句: Did + 主语+ 动词原形, 如:
Did you go to movies yesterday?
Was/ Were + 主语+ 其他: 如: Was he at school yesterday?
Could + 主语+ 其他, 如: Could you swim when you were ten years old?
2、特殊疑问句: 特殊疑问词+ 一般疑问句。