Question

那就是为什么在中国越来越多的人对学习英语感兴趣的原因用英语怎么说

Answer 1

That's the reason why there are more and more people who are interested in learning English in China.
这种表述比较简单,适合高中生

That's the reason to explain the phenomenon that the number of people who start to be interested in learning English becomes larger and larger in China.
这个表述复杂一点.

Answer 2

that's why there are more and more chinese people in china interested in learning english

Answer 3

that's why there are more and more people interested in studying English in China

Answer 4

that's the reason why there are more people in china interested in learning english