英语中用名词所有格和用连字符的区别?如 a two day"s holiday a two-day holiday

英语中用名词所有格和用连字符的区别?如 a two day"s holiday a two-day holiday 英语语法问题a two day's holiday 是这样表达吗?如果加连字符怎么表达才是正确的呢.还有距离,国家,城市 a two-day holiday 与 two days' holiday 有区别吗 we will have a two-day holiday . 可以用two days holiday吗?为什么?而这 a two-day holiday 与in two years' time有何区别? a seven-day holiday和 a seven day' holiday的区别 take a three-day holiday和take three day holiday的区别? 英语连字符和名词所有格的区别 英语语法：a four-day holiday a four day's holiday 英语：翻译We'll have a two-day holiday.What about going to the We a seven-day holiday 和a seven days' holiday的区别 a seven-day holiday 和a seven days' holiday 还有a seven day's h