The most systematic way to learn English should be to study according to a complete course in a planned way, including listening, speaking, reading and writing, which requires long-term continuous learning.

Here are some specific methods:

1. Make a study plan: make clear your goals and timetable, such as studying for half an hour every day or studying for three hours every week.

2. Learn the basics: it is recommended to lay a good foundation in English from English words and basic grammar.

3. Listen more and speak more: improve oral English and listening by listening to English pronunciation, watching English movies and listening to English music.

4. Read more and write more: improve reading and writing ability by reading English books, keeping English diaries and practicing writing and translation.

5. Take English training courses or online courses: Taking English courses can help you learn English more systematically and purposefully.

6. Find an English study partner: Studying with a partner who also studies English can increase motivation and help each other.

7. Keep learning: You need to keep learning English instead of giving up on a whim or lacking patience for a few days.