There is no shortcut to learn English这里的to learn English子句中作

There is no shortcut to learn English这里的to learn English子句中作 there is no more tired things than to learn english English is easy to learn.中：to learn是什么成分 English is easy to learn 这里的to learn 做什么句子成分 Is easy to learn english? To learn English is easy. English is difficult to learn English is easy to learn. There is no quick and easy way to learn English. But there i I think it diffcult to learn English well.为什么it后面不is?it在这里的作 He needed someone to help him learn English.learn在这里作什么,不太理解 Is there any way to learn English well?