I'm going to learn play an instrument.learn后为什么不加to?

I'm going to learn how to I'm going to learn huangfu i'm going to learn how to back a I'm going to learn english这句话对吗? I'm going to learn kung fu.是什么意思 I'm going to learn kung fu.变成否定句 I'm going to learn play an instrument.learn后为什么不加to? l'm going to learn to swim I'm going to Foshan to see the p. I'm going to Foshan to see the p. I am going to learn how ( )(drive) 八上英语词首字母填空I'm going to learn to p______ an instrument i'm going to learn how to swim 是什么语法知识 I am going to learn Chinese (learn Chinese划线提问) I'm going to I'm going to I'm going to 英语翻译I‘m going to learn drawing in Paris and find a job 共五个空