改句型 改成同义句原句：It has been twoyears since he left Shanghai.请改成：

改句型 改成同义句原句：It has been twoyears since he left Shanghai.请改成： it has been three months since he left his home(4个同义句)并说一下解释 It __ten years since he left Shanghai. It has been three hours since he left his office.把has been 换 it's two days since he left shanghai改为同义句 It has been five years since he has left for beijing这句话对不对啊 1.he has been in shanghai since he was born. to study abroad has always been her dream改成这个句型怎么改 Twenty years has passed since he left home.此句中的has要改成have吗?如 he has been here since he left college.对since he left colleg it's three years since he left wuhan.改同义句 It ——15 years since he left here.Awas B has been C has D wil