on rainy days 为什么介词要用on而不是in?

on rainy days 为什么介词要用on而不是in? I usually watch Tv on rainy days.为什么要用on,不用in? what do you usually do on rainy days为什么要用on而不用in? i usually watch TV （ ） rainy days 括号里是on还是in 为什么i usually watch TV （ ） rainy days 括号里是on还是in 为什么 求On Rainy days歌词的中文翻译 this way of telling whay the weather will be like on the following days.为什么介词要用on还是说on the following days是固定搭配? 关于except的问题,I jog every day except on rainy days,老师说rainy days前一定要加on,我个人理解是except前后要一致,因为是I jog on rainy days而不是I jog rainy days但是,如果是I jog every day except_______,是填Monday还 What fun it is to listen to music in bed on rainy days.为什么to listen to music 求on rainy days女生英文版的歌词 There is rain on rainy days翻译句子 --------- --------- to drive your car on rainy days 怎么填 She likes doing some r____ on rainy days.咋填? 求BEAST的新歌On rainy days 的音译 谁有BEAST on rainy days 牧童笛谱? what do you usually do on rainy days?答什么 What do you do on rainy days的中文是什么 是in rainy days还是on rainy days?麻烦in和on得用法 为什么是on weibo? rainy和raining用法麻烦详细一些举例 谢谢 He goes to work every day ______应选什么?为什么?为什么?A.except for rainy days B.besides it rainsC.but that it rains D.except on rainy days