Hello, I'm John Russell.

大家好，我是约翰·罗素PDUs||3EDze。

Let's explore the difference between two vowel sounds: /u/ and /u:/.(注：此音标写法为便于编辑，正确写法见视频)

让我们来看看元音/u/ 和/u:/的区别O_K8Kf^PWz。（注：此音标写法为便于编辑，正确写法见视频）

In previous videos, I described the /u/ vowel sound as the sound of models, and the /u:/ vowel sound as the sound of schools.

在之前的视频中，我将/u/的音描述为模特的声音，将/u:/的音描述为学校的声音V]bWweGF#.gb|ceBQ。

But let's explore the difference between these sounds in a little more depth.

让我们更深入地探讨一下这两个音之间的区别PUiIkq0zcZcLx(DI。

Let's start with the tongue.

我们先从舌头说起)W7vG7LS4Y&EvAa6。

Both sounds have a high tongue position at the back of the mouth.

这两个音发音时舌头都需要在嘴巴后部，稍微抬高Tq1@ZcH]X-ZgDq7fx。

But to make the /u:/ the sound, your tongue should be a little higher.

但要发/u:/的音时，你的舌头需要更高一些WE4uH@h3dScir&I。

There is also an important difference in the lips.

嘴巴形状也有很重要的区别OoEcgi7|zJmGZ。

When you make the /u/ sound, your lips should be a little more relaxed.

发/u/的音时，你的嘴唇应该稍微放松一点;Ce2&V#4Y|V]f4XYv。

For the /u:/ sound your lips should be more tense. /u/ /u:/

发/u:/的音时，你的嘴唇应该更绷紧一些4)Ej9KgHaD4[d。

/u/ is more of a pure vowel sound, whereas /u:/ is a vowel that is followed by a very faint semi-vowel, sometimes called an off-glide.

/u/更像是一个纯元音，而/u:/是一个元音，后面跟着一个非常微弱的半元音，有时被称为滑音sr4e4&i!#+。

That is why some pronunciation books spell the /u:/ sound as /uw/.

这就是为什么一些发音教材上会把/u:/写成/uw/.|wYsX!hh2q@h*+V]。

One problem is that /u/ and /u:/ vowel sounds have some similar spelling patterns.

有一个问题是/u/和/u:/音有一些相似的拼写模式(+cg|rk@J3MDULA7p@。

Both can have "oo" spellings, as in: neighborhood, school.

都有“oo”组合，例如单词：neighborhood、school7139q^qdY26I[,V8-4。

And both can be spelled with the letter "u", as in: push, super.

两个音都有字母“u”发出来的情况，例如：push、superXNtp75[Hbgp|n。

You can practice making the difference between these sounds with short words.

你可以用短词来练习，区分这两种发音.vQ%W%JX)9N(#。

For example, try saying "good food". (good food)

例如，试着说“好吃的”@&3Fzw^GAW4M_tIgT。（/u/ /u:/）

That's all for today.

今天就到这里吧Mpsoa]2..P*#qQQ。

Keep up the good work.

继续加油c6Z,MfUQ@N.r#。