moreover(另外),meanwhile(同时),atthesametime(同时).intheotherwords(换句话说),inaword(总之),inmyopinion(在我看来),besides(另外),firstly(第一),secondly(第二),thirdly(第三),however(然而)although/though(虽然)but(但是)because(因为)这些是比较常用的简单一些关联词Iamlookingforwardtohearingfromyou.(盼望收到你的来信)Iamlookingforwardtoyourcoming.(盼望你的到来。)这两句话是书信的结尾最常用到的