both,都他们不是同一个班级的。jack is in Class Four.I'm in Class Three.We are good friend.Jack and i are not in the same class,but we are good friends.你形式没说详细，我就这样回答了。不懂得可以再问我，我时间比较多，也会回答你的，呵呵……呵呵，应该是zhao Yang and jack are not in the same class.吧。。。。谢谢了