Question

How does your father go to xi an every year怎么回答？

Answer 1

How does your father go to Xi An every year?这句话的意思是:问你父亲每年是怎么去西安的？如果是坐火车，可以回答: My father goes to Xi An by train every year.
这里要注意两点:
1）your father应变成my father
2）这是一般现在时单数第三人称，动词go要变成goes

Answer 2

根据情况回答。比如坐火车，就回答：By train，乘飞机，则说By plane /air，等。

Answer 3

回答：My father goes to Xi'an by train every year.意思是 我父亲每年坐火车去西安。