the best way to learn english is to use it里面2个to do to learn & to use

the best way to learn english is to use it里面2个to do to learn & to use
the best way to learn english is to use it里面2个to do
to learn & to use

the best way to learn english is to use it里面2个to do to learn & to use
第一个是定语修饰 the best way 第二个是在is后面的表语