Video Text:

The [k] and [g] sounds are paired together because they take the same mouth position. Kk is unvoiced, meaning you pass only air through your mouth, and gg is voiced, you make a sound with your vocal cords. The position of the mouth: the back of the tongue rises to meet the very back of the top of the roof of the mouth, the soft part, called the soft palate. Kk. What you don't do is bring your tongue back in the throat. It goes up. The sound is then made when you build up a little bit of air and let your tongue go. That release is the sound. Kk, gg, kk, gg. As you can see, the jaw is slightly dropped. 我们把kk和gg的发音也合并起来讲，因为它们有着相同的发音方法。Kk是清辅音，即只需使气流通过而不发声，而gg是浊辅音，即振动声带发声。口腔发音位置：舌头根部抵在上颚的后部，是一块柔软的部位，我们叫做软腭。Kk。不过你不要把舌头卷到喉咙里，而是让它往上走。发音的时候呢，你要先存一点气，然后再弹开舌头。舌头弹开后发音就完成了。Kk，gg，kk，gg。正如你所能看到的一样，下巴有一点往下的动作。

Word pairs: 

cool 凉爽的—ghoul 盗墓者

curl 卷曲的—girl 女生

cap 帽子—gap 缺口

kill 扼杀—gill 沟壑