古人说“业精于勤荒于嬉”，作为一名教师，要想“业精”，除了要做到一个“勤”字外，还需用“心”。用心具体到教学上有两层含义。一是用心去体会要讲授的教学内容。人类文明儿干年代代相传、不断丰富，最后写到书本里的知识不是死知识，而是活生生的知识。做老师的首先应该 The ancients said that “industry is good at playing hard at leisure”. As a teacher, in order to be a professional teacher, “heart” should be used in addition to a “diligent” character. Intentions specifically to the teaching of two meanings. First, hard to understand the teaching content to be taught. Human civilization has been passed down from generation to generation and enriched. The last knowledge written in books is not dead knowledge, but living knowledge. First teacher should do