he has left since three years ago可以用吗或者必须用has been away?用since的可以用瞬息性动词吗?

he has been here since he left college.对since he left college提问 （）（）has he been here It______five years since he has left for Beijing. he has left school since last week改错 He has left Beijing since two days ago改错 He has left Beijing since two days ago.改错急 How long is it since he () his hometown?He () for nearly 10 years.A left;left Bhas left ;has leftChas left ;has been left Dleft ;has been left 改错：its 5 yeas since he has left his hometown.改has left 英语 句型转换 Ten years has passed since he left here.---- ---- ten years ---- he left here It has been five years since he has left for beijing这句话对不对啊 He hasn't written since he has left.改错哪里有错啊?请指出,并改错. holtham has changed little since Mike left there 的反义疑问句是has he?还是hasnt he?为什么? Twenty years has passed since he left his hometown.如何翻译? Ten years_____ by since he left here.A.have passed B.has passed tom has been in the factory --- he left school.a.since b.as soon as It___ten years since he left the army.A.is B.has C.will D.was he left home has a young man and (notsee) since then 怎么变时态 Eight years (has|have) pass since he left选什么 讲下理由啊 He has worked very hard__he left school.A.for B.befor C.since