以下是一些学英语的网站：

1. Duolingo: https://www.duolingo.com/
2. English Central: https://www.englishcentral.com/
3. BBC Learning English: http://www.bbc.co.uk/learningenglish/
4. British Council: https://www.britishcouncil.org/learnenglish
5. EngVid: https://www.engvid.com/
6.


English Grammar Online: https://www.ego4u.com/en/
7. Quizlet: https://quizlet.com/
8.


Memrise: https://www.memrise.com/
9. Englishpage: https://www.englishpage.com/
10. Lingoda: https://www.lingoda.com/
11. Coursera: https://www.coursera.org/courses?query=english
12. Udemy: https://www.udemy.com/topic/learn-english/
13. Babbel: https://www.babbel.com/learn-english-online
14. Rosetta Stone: https://www.rosettastone.com/learn-english/
15. FluentU: https://www.fluentu.com/

这些网站都提供了不同形式的不同难度的英语学习内容，可以根据个人的需要选择合适的网站进行学习。