every three every other day 每隔一天 every third day每隔2天 every forth day 每隔3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. every every every “every every every every other three days =every four days 对不? we have three classes___P.E.every week. I have three meals every sudu two or three times every month two out of every three=two in three every three every other day 每隔一天 every third day每隔2天 every forth day 每隔3天 ___,Monday,Wednesday,and Friday.A.Every day B.Every three days C.Every few days D,Every other dayWhy? 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 I read a book every three weeks对every three weeks划线怎么写