为什么On school nights,Nights要复数?the whole night就不用

on school nights是什么意思on school nights 为什么用on 为什么On school nights,Nights要复数?the whole night就不用 Tony doesn't watch sports on TV on school nights.这句话如何翻译,school nights前为什么用on,不用in? i have to stay at home on school nights为什么用on呢? Don’t go out on school nights on school night还是nights on school day还是days You can't watch TV on school nights.改同义句...on school nights. Go out on school nights.改为否定（ ）（ ）ont on school nights. let后面第三人称单数的动词watch变watches吗?为什么题为Let Tony _________TV on school nights. You mustn't go out on school nights.变祈使句 Don't go out on school nights .的中文翻译 you can't go out on school nights(改为祈使句 Don't go out on school nights.这句话对吗? Don t paly computer games on school nights翻译 Can you go out to s_____ friends on school nights? I can't________ my friends after school,and I can't wach TV on school nights. 英语题同意句转换Peter must go to bed early on school nights.提示：Peter ---------- ------------- go to bed early on school nights. Students can't watch TV on school nights.划线部分是on school nights,对划线部分提问.____ ____students watch TV?