Question

I think learning English well is very inportant

Answer 1

I think learning English well is very inportant
这个表述方式很少见，通常是这样表述的：
It's very inportant to learn English well.
或者这样表述：
To learn English well is very important.

Answer 2

I think learning English well is very inportant
我认为学好英语很重要