求翻译：对中学英语教师来说，不宜用太多时间进行烦琐的讲解，又总有许多方面不能不进行必要的讲解。要使学生发音正确，发音的部位和方法都应适当指出，有关的发音规则应让学生知道;各种语法要点都要采取适当的方法作有效的解释;各个词语的用法，除了课本出现的语义用例之外，还应根据大纲的要求和学生年级的不同进行适度的补充或小结;’••…总之，各种语言知识的讲解都应该简洁明了，突出重点;力争根据学生现有的知识，量体裁衣，从已知到未知，并针对不同的是什么意思？

Cumbersome explanations for secondary school English teachers should not spend too much time, there are always many ways, can not fail to make the necessary explanations. Make the students the correct pronunciation, the pronunciation of the site and methods should be appropriate pronunciation rules

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Middle School English teacher, not with too much time on tedious explanations, and there are always many ways must make the necessary explanations. To enable students to pronounce correctly, location and method of the pronunciation shoul