do you want to have a try还是do you want have a try

Do you want to have a try?
want to do sth 固定搭配，呵呵

want to do\want doing
没听说过want do的固定搭配....

用Do you want to have a try?你想试一试吗？
因为want + to +动词原形

do you want to have a try正解
want to do sth 想要做某事
want to 后面要加动词原型的词或词组
这里面的to是动词不定式，一定不能省略

要 TO

Do you want to have a try?
want someting是想要什么
want to do something 是想要做什么
两个动词中间用to连接，叫作动词不定式。
want sb. to do sth.想让某人做什么