可以说 "learned a lot of Engpsh from ... "
来源可以是各种途径，例如：学校课堂、英语课程、英语书籍、电影、音乐、网络资源等。
例句：
"I learned a lot of Engpsh from taking Engpsh classes in school."
"我从学校的英语课堂中学到了很多英语。"
"I learned a lot of Engpsh from watching Engpsh movies with subtitles."
"我通过观看带有字幕的英语电影学到了很多英语。"
"I learned a lot of Engpsh from reading Engpsh books."
"我通过阅读英语书籍学到了很多英语。"