be on a vacation和 go on a vacation的区别,

be on a vacation和 go on a vacation的区别, go on a vacation和be on a vacation的区别, go on vacation 和go on a vacation 的区别? take a vacation 和 go on vacation 有什么区别? 问 be on vacation go on vacation do for vacation take a vacation go for vacation等有什么区别,顺便问：What are you doing for vacation？与What are you doing on vacation？有何区别？ go on vacation还是go on a vacation? go on a vacation与go on vacation的区别go on a vacation与go on vacation一样吗? go for one's vacation /on vacation/ take a vacation go to vacation 和go on vacation 那个是度假 是go on vacation 还是go on a vacation?是go for vacation还是go for a vacation? go on vacation 和go on a vacation 有什么区别这两个是一样的吗? take a vacation = go on vacation = have a vacation = go for a vacation=on sp Go on a vacation = holiday :Wouldn't it be great if we could go on a vacation是什么意思 以be on(a)vacation造句 go on vacation 与be on vacation辨析我急需要答案谢谢~~~~~ go on vacation , take a vacation = go on vacation = have a vacation?