我们经常进县城听课,下乡检查工作听课,发现不少教师在教拼音和平时说话中分不清前后鼻音,直接影响了拼音教学和普通话的推广。怎样解决这一问题呢? 一、先要分清两类鼻韵尾 前鼻韵尾—n的发音部位在前,所以把它与元音组成的韵母叫做前鼻韵母。要发准前鼻音,首先要发准前鼻韵尾。前鼻韵尾—n也叫“舌尖阻鼻音”,发音时,舌尖抬起前伸,抵住上门齿背后的上牙床,舌根放下,上腭的后部——软腭下垂,打开鼻腔通路, We often go to the county seat for lectures and check the countryside to attend lectures and found that many teachers can not tell the difference between before and after the teaching of phonetic spelling, which directly affects the teaching of pinyin and promotion of Putonghua. How to solve this problem? First, we must first distinguish between the two types of nasal rhyme before the end of the nose rhyme-n pronunciation part, so it and the vowel consonant is called the former nasal vowel. To send a pre-nasal tone, we must first send the nose before the end of the rhyme. Before the nose Rhyme-n, also known as “tip nasal obstruction”, pronunciation, the tongue raised and stretched forward, against the back of the upper teeth on the gums, tongue down, the back of the palate - soft palate drooping, open the nasal passages,