I'm going to America on summer vacation请您帮我解释下这句话中的on在这里表示什么意思?

i m going to go to America什么意思 I'm going to go to America with( my parents).对括号内容怎样提问 i'm going to go to america in the summer.改为过去式 I am going to America和I am going to go to America有什么区别? where are you going on holiday? i'm going towhere are you going on holiday? i'm going to america翻译 I'm going to I'm going to I'm going to I am going back to America next month I am going to( )my cousin in America. I never think about going to America 与I never think abou t to go to America 有没语法错误 I'm going to marry I'm going to America.It( )the first time I go there.A.be B.is C.will be D.are What I decided to do------(be)to give up going to America.填空填什么 I'm going to learn how to I'm going to study Accounting.I want to buy a laptop Dell E6410 or Apple macbook MC374LL/A I don't care the price.I'm in America Tomrrow I'm going to talk about the d____ between America and China.根据第一个字母,填上正确的单词. I'm going to America on summer vacation请您帮我解释下这句话中的on在这里表示什么意思?