关于句改特殊疑问句

要看原句的时态。如果像你说的这句，i had a good time，则改为did you have a good time？

如果是she/he had a good time，则改为did she/he have a good time？

如果是she/he has a good time，则改为does she/he have a good time？

如一楼兄弟所说，做题是可以这么做，正常情况下一般还是问how are you doing比较多。意思为“最近过的如何”，在国外比how are you用的多。不过很少会出现how were you doing这种情况。

这种比较奇怪点 I had a good time 特殊疑问用How were you doing?你过的怎么样？
she,he和you开头都一样啊，如果是I的话就变成you而已

Do ，Did还是Does...就看前句是什么是时态咯，像那个句子就是看 had 这个词的时态的。

希望对你有用呵呵。