Tim has been abroad for three years.（TIM出国已经有三年） 我想问,为什么不是 tim has been to ,加TO ,为什么错

Tim has been abroad for three years.（TIM出国已经有三年） 我想问,为什么不是 tim has been to ,加TO ,为什么错 Has Tim ever been abroad before or not?请帮我回答一下这个句子. Tim has been abroad for three years.（TIM出国已经有三年） 我想问,为什么不是 tim has been to ,而这个,up till now i have been to New york three times.为什么加to My mother has never been abroad no.none of us has been abroad. He has been abroad many times. （1）It's the first time Tim has ever been to another country.tim以前从没去过其他国家,是第一次.（2）Tim's brother has never been abroad before.Tim的brother以前从没出过国.这2和1有什么区别? has amy of you been abroad?on none of us has been abroad has amy of you been abroad? on none of us has been abroad He has never been abroad before.这里的been是什么 My brother has never been abroad before为啥加been? He has never been abroad,has he?怎么翻译 You must be mistaken about seeing Tim in the supermarket.I'm sure he —— abroad all week.A.will be B.was C.has been D.had been I have never been abroad .He has never been abroad,either.的同义句 my brother has been abroad before有谁能解释一下为什么是been abroad,abroad不是副词吗新概念的 all the students except tom has been abroad改错 He has never been abroad before 分析下句子结构 it is 3 years since Tom has been abroad