every three day;every three days应该用哪一个?

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 three every other day 每隔一天 every third day每隔2天 every forth day 每隔3天 every day and ever night ,I miss you Do you skate every day (用for three hours 代替 every day People usually have three or four_____(餐)every day. every three days 和very third day有什么区别 His cousin plays basketball ( )three hours every day what --------times do you eats dinners every day?three 麻花疼,FUCK YOUR SISTER THREE TIMES EVERY DAY! 麻花疼,fuck your sister three times every day. 要用到often,every day,usually,three times a week,sometimes,once a week,always,once a month,要用到often,every day,usually,three times a week,sometimes,once a week,always,once a month,hardly ever,never这些单词要用单三的形式写,不要 millie does her homework for three hours every day.改为一般疑问句[ ] millie [ ] her homework for three hours every day? Do you skate every day?用for three hours代替every day.____ you ____ ____ for three hours? every third day每隔2天=every three days每3天?every other day （每隔一天）=every 2 days 每2天every third day每隔2天=every three days每3天every forth day 每隔3天=every 4 days 每四天 every three days，every three days，every 4 用所给词写一篇作文有关健康生活方式的often every day usually three times a week sometimes once a week always once a month hardly ever never 帮我写初二英语上册第一单元SELF CHECK 2作文老师叫写明星生活习惯的要有often every day usually three times a week sometimes once a week always once a month hardly ever never 初二英文改错改错You need to eat more food,have three meals and do some exercises ever day.Then you'll be better soon.every是我打错了