题目内容：

in the future,people will reduce how much they travel by plane,won't they?

优质解答

将来,人们会江少乘坐飞机的次数,对吗?

追问：

为什么又how呢？我赶脚木有how才对呀

追答：

how much 引导的宾语从句，做reduce的宾语

追问：

不好意思，还有有点转不过弯来，用much可以吗？

追答：

只是much是不行的，后面还有they travel by plane呢， 你可以变成 people will reduce much as they travel by plane today.