关于礼貌用语作用英语中please thank you sorry 等用语具有增进友谊 改善关系 化解矛盾等力量 请以礼

nowadays,with the science developed,we can make friends from many way,such as from the internet,we can make friends from all over the world.Perhaps the different country have different communicat ways.The polite words can make us more friendly to make