every four years 与 every third year every foevery four years 与 every third yearevery four years 是每隔四年?every third year是隔两年?what?书上为什么说它们相等?

every four years代表什么 every four years什么意思? every four years 与 every third year every foevery four years 与 every third yearevery four years 是每隔四年?every third year是隔两年?what?书上为什么说它们相等? The Olympic Games are heldA every four years B every four year C every fourth years D every four-years every four years的同义词组 the Olympic Games_____(hold) every four years. every four years 应该用什么提问 The Olympic Games take place （every four years）对every four years提问 every year 与every years every four years和every fourth year一样吗? every fourth year和every four years一样吗 every four years和every fourth year一样吗? every four years 和each four years哪一个对说明理由 every four years同义词 大致各式有没有four years……（不知道了） 高手帮忙回答下every four days与 every fourth day的区别The Olympic Games are held ()A.each four years B.every fourth year C.every four years D.each fourth years如果没有区别,这个又选什么呢?不要复制别答案的给我看 英语翻译they are both held every four years The olympic games (are)?held every four years. Olympic Games are held every four years翻译