为什么是on the radio?为什么用"on"

为什么是on the radio?为什么用on 为什么是on TV,on the radio The radio says the snow will stop later on,为什么是on 为什么是on TV而不是on the TV?大神们帮帮忙如；on the radio、on the phone、on the Internet on computer 为什么电视和电脑不加the? 是on radio 还是on the radio? turn on the radio On The Radio On the radio, on the radio on radio in radio的区别 为什么leaving the TV or radio 后要加on? the radio is still om的意思为什么用on Turn On the Radio 歌词 on radio 和on the radio的区别 He turn on the radio and stopped ____to the radio.A listend B to listen C listening 选什么,为什么 in the radio和on the radio有什么区别? on Radio Shanghai为什么用on? 能讲一下on radio ,on the radio,in the radio的详细区别吗? My radio is on the table.My clock is on the ta-ble,too.（合并为一句）My radio ____________ my clock _______________ on the table.