现代社会屈一个精神文明高度发展的社会，人人都很讲礼仪礼貌，但并非人人都知道礼仪的来源。每一项礼仪的产生都有一定的社会背景和原因。例如：18世纪，即使在室内人们也戴着帽子，只有女士到来时才脱帽致意，然后马上带上。还是因为，白先，帽子是官队的标志和社会地值的象 In modern society, a highly developed society of spiritual civilization, everyone speaks of manners and courtesy, but not everyone knows the source of manners. Each etiquette has a certain social background and causes. For example: In the eighteenth century, even when people were wearing hats indoors, only women were taken off their hats to pay homage, and they were taken immediately. Or because, white first, the hat is a sign of the official team and social values ​​like