Your questions answered as follows, for your reference. 1.随着（as, along with）： e.g. a. 随着时间的推移，城市变得越来越漂亮了。 As time goes by, cities are getting more and more beautiful. b. 明天你能随着我一道去吗？ Can you come along with me tomorrow? 2.关于（regarding, as to） e.g. 关于这个问题，今年一定能够得到解决。As to this problem, it'll be solved in this year. 3. 分之 e.g. 三分之一 One third. 五分之三 Three fifth. Bobit