跟老外学英语发音(3)l和r
How to Make the Sound
There are two /l/ sounds in English. One is the light /l/, which occurs at the beginning of a word, and the dark /l/, which can be found in the middle or at the end of a word. To make the light /l/, place the tip of your tongue just behind your top teeth. Your breath should pass along both sides of the tongue and through the open lips. The dark /l/ is similar, except have the tip of your tongue further back. /r/ is very close to the dark /l/, except the tip of your tongue should not touch the roof of your mouth.
音标/l/的发音有两种,一种是在单词开头的轻音,一种是在单词中间比较重的音。发轻音的[l]的时候,将舌尖抵住上牙,从舌头两边送气发音(所以这个音在语言学上叫做边音)。重音的/l/发音很相似,只是舌头的位置要靠后一些。/r/和重读的/l/很像,只是舌尖不要碰到上牙。
http://www.hjenglish.com/new/p62234/