是"every three day"还是"every three days"(每三天)

是every three day还是every three days(每三天) every three day;every three days应该用哪一个? every day是名词还是副词 he has three classes every day 对划线部分提问,画线是three in every day还是on every day I watch TV three times a week.对 three 提问还有一个是： We play games every day. 对 every day 提问O(∩_∩)O谢谢 是I do sport every day 还是 I do sports every day 请说明理由, 是in every day English正确还是in every day's English正确 Jack practices playing the piano three hours every day.对划线部分提问three 是划线部分 every three every other day 每隔一天 every third day每隔2天 every forth day 每隔3天 write ( ) it every day 里面是填 on 还是 in every day是名词词组还是副词词组? 是what do you have for three meals a day 还是 what do you have for three meals one day 是Speak English every day还是Speaking English every (⊙o⊙)… 英语作文 是every your da y 还是 your every day如题 是once every morning 还是once a day every morning.为什么? Do you skate every day (用for three hours 代替 every day People usually have three or four_____(餐)every day.