since then,he hasn't smoked no longer.改错,在线等!加分!

since then,he hasn't smoked no longer.改错,在线等!加分! He hasn't written since he has left.改错 He smoked since 2 years ago .怎么翻译?等不等于It is 2 years since he he hasn't decided if he will come tomorrow在线等 since when ,since then的区别（在线等） is your grandpa still smoked?----no ,It's years s(since) he It is five years since he smoked It is three years since he smoked. It is ten years since he smoked or didn't smoke Has he had his dinner yet?A.Yes,he hasn't B.No,he hasn't C.Y He no longer was a child.he no more did it like this 改错 一道英译汉的题He hasn't left Quanzhou ever since he left school.