编辑同志: 我是初中语文教师,在教学文言课文中经常要查阅古汉语辞典一类的工具书。而这类辞书大多用“反切”、“读若”来注音。请问,什么叫“反切”、“读若”? Editor comrades: I am a junior Chinese language teacher. I often refer to ancient Chinese dictionaries as a reference book in teaching classical Chinese. Most of these dictionaries use “anti-cut” and “read if” to phonetic. Excuse me, what is “anti-cut” and “reading if?”