辅音 /l/发音练习
1、辅音 /l/发音诀窍：
Prolong the L and keep it right behind the upper teeth.
the tip of the tongue touches the gum ridge behind the upper teeth, just the same as when creating the /t/ and /d/ sounds.The air stream flows through the sides of the tongue. When the /l/ occurs at the end of a word, make sure you don’t release it quickly as you would do with a /t/ or /d/. This will make your /l/ sound foreign. The American /l/ is softer and longer than the /l/ sound of many other languages.
Don’t round your lips when you are saying the /l/ sound.
如果舌头太往里卷，会容易发成 r 的音：
If your tongue is not touching the right place, your /l/ will sound like an /r/.
For example, the word wall might sound like war. To correctly pronounce the /l/,make sure that the tip of your tongue is in the front, near the upper front teeth when it touches the top of your mouth. If the tip of your tongue is pulled farther back in the mouth, it might sound like an /r/ instead. Use a mirror to see the position of your tongue for the /l/ sound.
根据赖世雄的美音教程：
发此音时，双唇要张大些，舌尖上扬抵住上齿龈，振动声带，气息由舌头两侧出来。[1]的音类似我们在发汉语拼音 “1”或汉字“乐”之前舌头翘起振动声带的声音。
有两种情形：
第一种，l 在元音前发汉语拼音 l 或者 乐 的音
lake
like
第二种，l 在元音后发汉语拼音 ou 或者汉字 ou 的汉语发音，但是注意l 在末尾时候，要让舌尖停留一会儿。
all
sell
full
will
school
sold
2、常见表达形式
word pairs:
gold medal 用作舌头专项训练不错。
cold milk
tall girl
old school
little children
3、绕口令练习：
(1)l+辅音：
code vs cold
debt vs dealt
wide vs wild
toad vs told
(2)长元音+l:
place an extra /ə/sound (schwa) in between. For the word feel, say “fee-əl.”
/i/+ əl
feel /fil/
steal
deal
real
wheel
heal
/eɪ/ + əl
sale /seɪl/
whale
pale
fail
exhale
/aɪ/ + əl
mile, /maɪl/ 容易发音错误
while
style
smile
/ɔɪ/ + əl
oil /ɔɪl/
toil
spoil
foil
boil
soil
/u/ + əl
tool /tuːl/
school
rule
fool
cool
pool
注意这里的 /eI/双元音，明显要读得更长
sell /sel/ vs sale /seɪl/
fell /fɛl/ vs fail /feɪl/
well /wɛl/ vs whale /weɪl/
(3)/l/与/r/的对比：
feel vs fear
deal vs dear
stole vs store
mole vs more
bowl vs bore
tile vs tire
while vs wire
file vs fire
进行刻意的舌头纠正练习有必要，接下来的一周，每天进行 l 的专项训练。
4、句子练习
I’ll call you to tell you about the film.
l feel terrible about the political scandal.
l think I’ll be able to handle it by myself.
You’ll do well at school.
5、参考教程
《赖世雄美语音标》， 赖世雄著；
《Mastering the American Accent》， Lisa Mojsin著。