it has been some time+since是什么意思I realise that it has been some time sine I have 这话该如何理解

英语翻译翻译 it is the first time tim has ever been to another country. 为啥it is some time since与it has been some time since没区别 it is some time since+...与it has been some time since+...什么区别? Yellow of the evening,Tim has been very,very beautiful. （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? it has been some time+since是什么意思I realise that it has been some time sine I have 这话该如何理解 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 为啥it is some time since与it has been some time since没区别谢谢了, 新概念2第4课后面的选择题第2题,为什么选B only one of these statements is true,which one?a) Tim has been in Darwin for six monthsb) It's the first time Tim has ever been to another countryC) Perth is in the centre of Australiad) Tim's it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed 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 I don’t think it advisable that Tim _______ to the job since he has no experience.a、is assigned b、 will be assigned c、 be assigned d、 has been assigned这题选什么?为什么 请翻译整句谢谢 –I’ve been told to pay the rent .–But it has already been paid .It __________ by some else . ( )Tim _____ the school basketball team for three weeks.( )Tim _____ the school basketball team.( )tim _____the school basketball team activities.a.has jioned b.has jioned in c.has been d.has beenon