否定句：I don't have long hair.
一般疑问句：Do you have long hair?什么情况下用does?当主语是第三人称的时候比如：She has long hair.那么疑问句就是：Does she has long hair?否定句就是：She does not have long hair.否定句吧don't改成not可以吗？don't = do not可以的还要加上do吗？当然要哟 ，记住 don't = do not否定