how many times 和how often有什么区别？

how many times是问次数
how often是问频率

例句
how many times do you go to Chicago?
你去过芝加哥几次？

how often do you go to Chicago?
你平均多久去一次芝加哥？

how many times 多少次，比如你吃过多少次KFC就用这个
how often 多久一次，如果说你多久吃一次就用这个

how many times (比如去过某个地方几次)

how often do you go to the night school?

twice a week...(一个星期两次)
这是一种持续性的..就是多久几次

how many times有几次
how often多经常

how many times问几次一般用，three times之类的来回答
how often问频率,一般用once a week 之类的来回答