把第二个have改为had
即
Have you had a good time?
因为现在完成时结构 have/has + done的形式第二个问题呢？幼儿园教师在幼儿园干什么（英语回答）[ in my opinion]The teachers in kindergarten usually take good care of the children.With the help of the teachers, the children can both have fun and learn a lot .the kindergarten is compared to the gold time in everyone's childhood, so the teachers in kindergarten are not only doing their jobs but leaving a good memory to children as well。