写作原则内容简单化结构模式化（主题句-分论点-总结）语言要包装错误要回避万能理由(Omnipotence)：1、方便：convenient/convenience2、效率：efficient/efficiently/efficiency3、节省和浪费：savetime/money/space;economical,thriftwastetime/money/space;costly,lavish4：人的心理健康：independent,cooperative,competitive,considerate