用since的话,本句应该是：It is ten years since he joined the army.用since的话,本句应该是：It is ten years since he joined the army.那本句改为It was ten years since he[ ]the army.怎么填

用since的话,本句应该是：It is ten years since he joined the army.用since的话,本句应该是：It is ten years since he joined the army.那本句改为It was ten years since he[ ]the army.怎么填 强调句,用It was, It is 怎么选择?强调句,用It was, It is 怎么选择? 是根据 主句的时态么? It was three years ago that I travelled last time. 这个句子应该是强调句吧? 强调句的话,It is / It was , 用 is ,或是 w It is/has been…since… It was/will be…before… 这两个句It is/has been…since…It was/will be…before…这两个句型怎么用?要用什么时态? It is +段时间＋since+主语＋did.请比较：It was +段时间＋since+主语＋had done.如：It is five years since he left here.他已经离开这儿五年了.It was five years since he left here.（同上） 请问第二句不是应该用it 什么时候用It was+一段时间 +since,什么时候用It is +一段时间+since? 分析这个英语句子的时态和句意!it is／was 3 years since he came here.since不一定和完成时连用吗?用is或was有什么区别 为什么since不能用做that? since +从句,since这个词语加从句的话,一般能接什么时态的从句.还有It is +一段时间+ since从句. 92836:OJT is known as one of the best training method since it is planned,organized,and conducted at the workplace.想知到的语言点：1—求本句翻译及语言点?1_OJT is known as one of the best training method since it is planned,organized it is three years since she came to Nanjing(改为同义句) ---- ----- ---- ---- since she came to 南京 It is +一段时间+ since【用的是什么时态?】 It is/has been+since sb+did 怎么用? it is over a year since i met him 为什么要用since since前不是要用完成时吗? how long is it since you last saw her?since 不是用在现在完成时吗 It is five years since we began learning English既然有since为什么要用it is? since+延续性动词的疑问It is many years since I enjoyed so much last night.enjoy是延续性动词,如果反译的话,应该是“自从我昨晚不高兴以来,已经是很多年了.”明显不对.那这里算不算延续性动词的特例? It is+since+ 句型的问题如题 我用两个例子来引出我的问题：It is 5 years since I lived there.It is 5 years since I left there.这两句话所表述的是同一个意思：我离开那里5年了.第一句中为什么会那样翻译? 一道初一英语连词成句many,it,is,they,years,since,other,time,saw,each,last It is four years since he bought the car.同义句