1. In short, politeness costs nothing and gains everything. 总之，礼貌没有成本却收益颇多。
2. The British people are known for their politeness, but nowadays their habits of politeness are not as formal as before. 英国人以文明礼貌而著称，但是，现在他们以礼相待的习惯已不像以前那么正规了。
3. The author explains this difference from two perspectives: the politeness system and the relation between reader and writer. 接着作者从礼貌系统和作者与读者的关系这两个方面对这一差异加以解释。
英英解释
n.
1. a courteous manner that respects accepted social usage
2. the act of showing regard for others
