英语 过去式怎样变问句

分三种情况
1）be动词作谓语时，把be动词提前
for example：She was a teacher.----->Was she a teacher?
2)行为动词（即一般的动词）作谓语，用助动词did提前,动词为原型
for example:He cleaned the room.------>Did he clean the room?
3）有情态动词作谓语，直接把情态动词提前即可
for example：You could play basketball----->Could you play the basketball?

助动词用did，be动词用was或were

问的好含糊

如
I went to school buy bike.
一般疑问句
Did you go to school by bike?
特殊疑问句
How do you go to school?