pay sth

pay sth pay sb.back sth. pay sb.back sth. pay sb.back sth. pay sb.back sth. pay attention to do sth 还是pay attention doing sth pay for sth和pay sb for sth pay sth for money对吗? 造句 pay attentionto(doing)sth pay sb.for doing sth.是什么 意思? sb.pay some money for sth.意思 sb pay money for sth=? offer money for sth,pay sb money for sth, pay sth for 10yuan purchase sth for 10 yuan 是pay attention to do sth .还是pay attention to doing sth. pay attention not to doing sth 还是pay attention to not doing sth 是不是只有pay money for sth?有没有pay pens for sth? 为什么有时是pay sth而有时是pay for sth