learn English by listening to the radio.by后面的listen to 为什么用动词ing形式?

英语翻译：learn by oneself English ＿＿＿does Tom learn English?He learn English＿＿＿lis＿＿＿does Tom learn English?He learn English＿＿＿listening and reading. 造句we learn English by 10句 He learn English all by h______ . she said they learn by using English “learn by oneself English”和“learn English by oneself”哪个是对的? Do you learn English by watching English-language videos Learn english by using English用中文怎么翻译 I think the best way to learn moue English is to learn by (speaking)English She learn English (by listening to tapes)(对括号提问) by to it's learn important english heart words you can learn english only by Using it 翻译, l learn English by the radio 这句话对吗? We learn english by means of speaking and listening you can learn English only by using it翻译 He always learn English _____ the radioon haishi by We learn english by reading改为被动语句. Do you learn English by reading aloud?的意思是什么?