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diff --git a/1000-hours/sounds-of-american-english/2.2.4-kg.md b/1000-hours/sounds-of-american-english/2.2.4-kg.md
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--- a/1000-hours/sounds-of-american-english/2.2.4-kg.md
+++ b/1000-hours/sounds-of-american-english/2.2.4-kg.md
@@ -15,6 +15,7 @@ Firstly, to pronounce these two sounds, the back part of the tongue must be rais
Moreover, much like the t/d sounds, k/g also naturally carries a slight vowel sound. Once again, it's not ə but ɤ, where the air is flowing through without any vocal cord vibration. Pay close attention to the pronunciation of class: klæs. The sound ɤ is subtle yet noticeable.
另外，夹在两个元音之间的 k 也会出现像 t 夹在两个元音之间时那样的浊化现象，听起来更接近
- g。比如，*look out*，*seek out*。
+ g。比如，*look out*，*seek out*，*woke up*。
- Also, when a k comes between two vowels, it can undergo a similar voicing change as a t between two vowels, making it sound closer to a g. For example, in *look out* and *seek out*.
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+ Also, when a k comes between two vowels, it can undergo a similar voicing change as a t between two vowels, making it sound closer to a g. For example, in *look out* and *seek out*, *woke up*.
+
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