那也不能抄啊,自己写啊,别养成依赖答案的坏习惯啊.Unit1 how often 多久一次exercise v.& n.锻炼skateboard v.踩滑板hardly adv.几乎不ever adv.曾,曾经once adv.一次twice adv.两次time n.次,次数surf v.在…冲浪In...