当清辅音爆破音 p t k 接在 s 音后面与之构成辅音连缀、后接元音时，由于 s 送气很强，这些爆破音实际发音时送气就明显减少，听起来就像与它们相对应的浊辅音，但并不能说这些清辅音浊化变成了浊辅音，因为在发这些清辅音时声带并没有明显的振动。所以，也有人把这种情况叫做“不完全浊化”。
You should study hard to improve your English.
I’m sorry, but the dress you want is out of stock.
He speaks English with a strange accent.
I’ve been especially busy recently.
You look nice in your new skirt.
I was too scared to utter a word.
The scholar remains modest despite his great achievements.
She is very responsible and is always on time.