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cover of episode 1: The English ’th sounds’ /θ, ð/

1: The English ’th sounds’ /θ, ð/

2008/3/19
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American English Pronunciation Podcast

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Mandy: 英文中存在两个TH音,/θ/和/ð/,它们经常困扰非母语人士。/θ/是无声的,/ð/是有声的,区别在于发音时声带是否震动。我们可以通过两种方法来区分清辅音和浊辅音:一是将手指放在喉咙前,感受声带震动;二是堵住耳朵,比较声音差异。 除了TH音外,还有其他一些辅音对也存在清浊之分,例如B和P,G和K。但TH音的特殊之处在于,这两个发音的拼写相同。在单词"the"中,TH音是有声的;而在单词"think"中,TH音是无声的。 如果你不确定某个单词中的TH音是清音还是浊音,你可以查阅字典中的发音符号,或者咨询母语人士,询问其发音是否与"the"或"think"相同。然而,大多数人对自己的发音机制并不了解,因为我们学习母语是在很小的时候,那时我们还不知道自己在学习什么。 正确发TH音的关键在于舌尖的位置和气流的控制。舌尖要轻触上排前牙后方的牙龈,然后从舌头和牙龈之间呼出气流。舌头可以稍微位于上下牙齿之间,但不需要伸得太靠前。/θ/和/ð/的区别在于声带是否震动。TH音属于摩擦音,发音时气流应该持续,而不是在发音开始时就停止。如果气流停止,则会发出类似T或D的声音。 TH音在英语中非常重要,许多高频词汇都以TH开头,例如that's, that, then, there, they, the, think等。为了更好地练习TH音,我们可以使用句子"Think about this thing, that thing, and those things",这个句子可以帮助我们练习TH音的清浊转换。练习时要注意避免将TH音发成T、D、S、F或Z音。 在pronuncian.com网站上,你可以找到更多练习资源,包括超过5000个音频文件和最小对练习。最小对练习可以帮助你纠正错误的发音习惯,例如tin-thin, boat-both, pad-path等。

Deep Dive

Key Insights

What are the two 'th sounds' in English and how do they differ?

The two 'th sounds' in English are /θ/ (unvoiced) and /ð/ (voiced). The difference lies in the vibration of the vocal cords: /ð/ is voiced, meaning the vocal cords vibrate, while /θ/ is unvoiced, with no vibration.

How can you determine if a sound is voiced or unvoiced?

To determine if a sound is voiced, place two fingers against the front of your throat and say the sound. If you feel a vibration, it is voiced. Alternatively, plug your ears and say the sound; a noticeable difference in resonance indicates voicing.

What is the correct way to produce the 'th sounds' in English?

To produce the 'th sounds,' the tip of the tongue must touch the back of the upper front teeth while pushing air out between the tongue and the bony ridge behind the teeth. The vocal cords vibrate for the voiced /ð/ sound but not for the unvoiced /θ/ sound.

What are fricatives, and why are 'th sounds' considered fricatives?

Fricatives are continuous sounds created by allowing a small amount of air to escape the mouth, causing friction and sound. The 'th sounds' are fricatives because they involve a continuous airflow and can be sustained as long as breath allows.

Why are 'th sounds' important in English?

'Th sounds' are important because many high-frequency words in English, such as 'that,' 'the,' 'think,' and 'they,' begin with these sounds. These words are among the top 100 most commonly spoken words, making mastery of 'th sounds' essential for clear communication.

What are minimal pairs, and how can they help with 'th sound' practice?

Minimal pairs are sets of words that differ by only one sound, such as 'tin-thin' or 'boat-both.' Practicing these pairs helps learners distinguish and correctly produce the 'th sounds' instead of substituting them with similar sounds like 't' or 'd.'

Chapters
This chapter introduces the two 'th' sounds in English, /θ/ and /ð/, explaining the difference between voiced and unvoiced sounds and how to identify them. It also discusses the difficulty non-native speakers face with these sounds and suggests ways to determine if a 'th' sound is voiced or unvoiced.
  • There are two 'th' sounds in English: voiced /ð/ and unvoiced /θ/.
  • Many non-native speakers struggle with these sounds.
  • The sounds are spelled the same but differ in vocal cord vibration.
  • Dictionaries use symbols to indicate voiced and unvoiced sounds.

Shownotes Transcript

Translations:
中文

Welcome to Seattle Learning Academy's American English Pronunciation Podcast. Not all Americans speak alike, but I'll help you get closer to how the majority of us do. By the way, my name is Mandy. You can find transcripts of this podcast and lots of practice activities at www.pronunciation.com. You will also find our practice sentences there, like today's practice sentence,

Think about this thing, that thing, and those things. I'm going to begin today with two sounds that cause trouble for nearly every non-native English speaker, no matter what their first language is: the TH sounds. Yes, there are two TH sounds. One is voiced, and the other isn't. What do I mean voiced? I mean that our vocal cords are vibrating during the sound.

We have lots of pairs of sounds that are voiced and unvoiced, but most of them are spelled differently from one another. For example, the D sound is voiced, but the T sound isn't. Other than that, the two sounds are very, very similar. There are two easy ways to tell if a sound is voiced or not. One is to put two fingers against the front of your throat and say the sound. If it is voiced, you should feel a vibration.

Some people will plug their ears with their finger and say the sound. You should notice a big difference between the sound during a voiced or unvoiced sound while your ears are plugged. The B sound and P sound are another voiced-unvoiced pair, B, as are the G sound and the K sound, G. The voiced TH sound and unvoiced TH sound just happen to be spelled the same.

Can you tell me if the TH sound in the word "the" is voiced or unvoiced? The. How about the word "think"? Think. The word "the" has a voiced TH sound, and "think" has an unvoiced TH sound.

If you aren't confident that you know whether a word has a voiced or unvoiced TH sound, it's time to learn the symbols your dictionary uses or ask a native speaker if the word starts with the same sound as the word "the" or the word "think." If you ask him or her if it's a voiced or unvoiced TH, that person will probably not know what you're talking about. Interestingly enough, people usually understand very little about how they talk.

This is because we all learned our native language long before we knew what we were learning. We were really just trying to get our parents to give us what we wanted. So what is the right way to make the TH sounds? Well, to correctly create both sounds, the tip of your tongue has to be touching the back of your upper front teeth while pushing air out between the tongue and the bony ridge behind the upper front teeth. Let me repeat that.

The tip of your tongue has to be touching the back of your upper front teeth while pushing air out between the tongue and that bony ridge behind the upper front teeth. It's okay if the tongue is between the top and bottom teeth a little, but most people find it difficult to push your tongue that far forward, and it isn't necessary. The difference between the sounds is in using the vocal cords or not. Also, the TH sounds are fricatives.

What's a fricative? A fricative is a continuous sound that is created by allowing only a small amount of air to leave the mouth, which causes friction and sound. Something special about fricatives is that we can continue to make the sound for as long as we have breath in our lungs. I can say either TH sound for a long time, or

If you can't do that, you're probably stopping the air at the beginning of the sound. This creates a different kind of sound, usually something that sounds like a T sound or a D sound to a native English speaker. The TH sounds are pretty important in English. Some of the most frequent words we say begin with a TH sound. According to Wiktionary's word frequency chart, the words "that's," "that," "then," "there,"

"they," "the," and "think" are all in the top 100 words we say. That Wiktionary corpus isn't the most scientifically derived, but I like it because it's made from television and movie scripts, so it's more geared for counting the words we say than the words we write. Since we speak less formally than we write, it's a good guide to use for pronunciation purposes. Here's a little sentence to help you practice your TH sounds.

Ready? Here it is. Think about this thing, that thing, and those things. Here it is again. Think about this thing, that thing, and those things. That sentence forces you to alternate between TH sounds. Make sure your THs don't sound like T's or D's or S's or F's or Z's.

I don't want to hear zissing, zatsing, or disting, dotting, or dotfing. Focus on nice clear THs. Think about this thing, that thing, and those things. We have lots more practice on pronuncian.com. P-R-O-N-U-N-C-I-A-N dot com.

including over 5,000 audio files for specific sound practice. You can find a whole list of words that contain the TH sounds, not just at the beginning of words, like we practiced here, but also in the middle and end of the word. You can also practice words that are called minimal pairs. Minimal pairs are sets of words that are the same except for one sound. If you know you tend to say a T sound instead of a TH sound, you can practice pairs of words like

Tin-thin, boat-both, or pad-path to help you break the habit of saying the wrong sound. Well, I hope you've memorized that sentence by now. Think about this thing, that thing, and those things. There you go. Have a great week, everyone, and have fun with those sounds.