We should try _____ English well.是用 to learn 还是learning ,try to do 和donging 有什么区别

try to learn.
事实上，我们很少用到try doing的句型。如果用到了doing那么这个是动词变名词了。因为有try something的用法。

try to do sth = try/do one`s best to do sth.尽力做某事
try doing sth.尝试作某事
根据句意"我们应该努力学好英语",故填写 to learn .