①They will go to Sichuan by train.(就划线提问)划线部分是 by train

问题描述:

①They will go to Sichuan by train.(就划线提问)划线部分是 by train
② I learned English from the radio.(就划线部分提问)划线部分是 from the radio

这两句都是对方式状语提问,疑问词用how .How will they go to Sichuan How do you learn English