There is no shortcut in English learning, but we can improve our learning efficiency through some skills and methods to achieve the purpose of learning English quickly.

Firstly, vocabulary learning In order to learn English quickly, basic words are very important, which is also a factor that greatly affects the learning efficiency. When learning English words, many people are used to memorize them by rote, which is the lowest learning efficiency. Therefore, you can take fun memory method and reading expansion method to learn, and you can search the specific steps by yourself.

Secondly, cultivate interest in English learning As the saying goes, interest is the best teacher, so it's better to cultivate interest in English learning for yourself before learning English, so that the speed of learning English will improve a lot, such as to cultivate interest in listening to English songs or watching American TV dramas. It's better to set up a certain icon for yourself, such as worshiping a foreign star. In this way, we can stimulate English learning potential and improve learning efficiency.

Thirdly, interactive exchange and sharing Even if you think your English level is very high, it can't be recognized without practice, so you should learn to communicate and share what you have learned with others, constantly explore your own English learning defects, and constantly improve, which will help you gain better learning methods and skills, so it's also a good way to learn English fast. Fourthly, create a language environment No matter how good our learning skills are, it's better to stay in the language environment. Imagine how we learned Chinese well when we were young, depending on the long-term language exchange environment.

Similarly, if we want to learn English quickly and create a fixed English exchange environment for ourselves, we can not only quickly shape our English learning thinking, but also help our English thinking mode. If you can afford, you can apply for a class for yourself. Otherwise, you can find some English corners.

For english lovers, English can be so much fun. Since you have asked how to learn english fast, I would like to share my experience with you. 
I love english so much since I was a pupil. I always got very high marks in english tests. And my english teachers always praise me. So that would push me learn english harder and harder. 
In the gaokao,I got very high marks in english. Which drives me choose the english mayor. And now I study english in the university. I succeeded in chasing my dream. I think I'm fortunate. 

The top answer is the old cliche... Everyone knows the correct method of learning, it depends on how you do it.

What we do well or not depends on the conditions an environments we live.

If we can go aboard or study in  a foreign language university, I think we can learn English well fast. But if there are  no these good circumstances and conditions. We can only study it step by step.

If you have mastered some English knowledge especially maintained reading ability, you should read as much as possible, I think it's a good way to improve your English.

I figure that you shouldn't consider how fast  you can learn English well, you should make efforts to study it, taking more time to stay with English, What you want will wait you at the next corner of your road.

Being an ordinary person, there must be a tough and bumpy road to learn English well, but only we have tough willing to do it. We must learn it well in the coming days.

A lot of good stuff but worshiping a foreign star for English learning is questionable. 

There is no shortcut to master spoken language. - Luke Shen-Tien Chi

Use PIE roots.

有些人的回答连单词都没用对。

If we want to learn English fast, we should practice more. Because practice makes perfect.

To learn any language you must learn how it sounds. Languages are made to be spoken not only read. Knowing how the language sounds makes the the language more meaningful. A baby listens to a language for one year then it begins to speak. A four year old child is easily understood.  If a person spends 30 minutes a day,  with the correct guidance,  fluency is achieved in 2 years. These are not my truths but have been proven by Avrim Chomsky, the father of language acquisition.