一般疑问句：在句首加did,句子中的动词过去式变回原形.如：Did Jim go home yesterday?特殊疑问句：⑴疑问词+did+主语+动词原形?如：What did Jim do yesterday?⑵疑问词当主语时：疑问词+动词过去式?如：Who went to home yesterday?
还有比如does也是一样的