My parents have gone to Hangzhou for holiday.为什么这句话有两个动词也对啊?

题目

My parents have gone to Hangzhou for holiday.为什么这句话有两个动词也对啊?
My parents have gone to Hangzhou for holiday.
have 和 gone 都是动词啊,不是说一句话只能有一个动词吗,

答案

这个是完成时好不好
have done（过去分词）
注意：gone是go的过去分词,严格来说不是动词啦