Welcome to Daily Tips on Learning English. Today's tip is on the difference between voiced and voiced pairs of consonants.
This difference is important, as it is the basis for learning
other aspects of spoken English. First, let's explain this difference. Let's compare some consonants, for example, t, d, p, b, k, g, s, z. These sounds differ only in that the first is
voiceless and the second is voiced. Put your hand in front of your mouth and say:" “t”, then say: “d”. Try it again with “s”, “z”. Did you notice that “t”, “s” have more breath or air coming out of your mouth than “d”, “z”.
Now put your hand around the front of your throat. Try it again. Say “t”, “d”, “s”, “z”. Did you notice that “t”, “s”
have no vibration, whereas “d”, “z”, there's a vibration?
The sounds with a lot of breath but no vibration are called voiceless, because the vocal cords are not vibrating. The sounds with little breath but a lot of vibration are called voiced, because the vocal cords are vibrating. Tomorrow we will discuss
how vowels followed by voiceless consonants are shorter than vowels followed by voiced consonants.
Let's just look at one example today. “bet”, “bed”.b，e，t,
[
];b，e，d, [
]
Did you notice how the vowel sound “e” is shorter before “t” and longer before “d”? Tune in tomorrow for more examples of
this feature of English. That has been today's tip on learning English.
有声子音我们叫浊辅音，无声子音我们叫清辅音。
辅音又称子音。顾名思义，辅音依元音而存在，辅音与元音配合，产生音节，组成英文的多样化。
辅音包括清辅音和浊辅音两大类。发音时声带不震动、送气的叫清辅音；发音时声带震动、不送气的叫浊辅音。
辅音都是嗓音，这是因为发音时气流受到不同程度的阻碍，发出的音不像元音那样清脆悦耳。
发辅音时，不论美语或英语，都能感觉到下面的一些共同的特点：
1) 气流受阻。从肺部呼出的气流在通过口腔或鼻腔时遇到阻碍（发元音时不受任何阻碍）。
2) 气流较强。（发元音时气流较弱）。
3) 阻碍部分肌肉较紧张（发元音使肌肉均衡地保持紧张）。
4) 有清、浊之分。
posted on 2006-08-29 11:26
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