So, both the voiced and unvoiced "th" sound have the same shape of the tongue slightly out of the mouth and the upper teeth resting on the tongue, while the air flows through and makes a vibration.

所以，有聲和無聲的 "th "音都有相同的形狀，即舌頭微微伸出口外，上牙靠在舌頭上，同時空氣流過，發出震動。

So, it's the same shape but with the voiced version, you're using your voice.

所以，形狀是一樣的，但有聲版的，你要用你的聲音。

We already learned that sound, the same sound that's in the word "them" and "they," but now we're going to learn to not use our voice.

我們已經學會了這個音，也就是 "他們 "和 "她們 "這兩個字的音，但是現在我們要學會不用我們的聲音。

So, if you feel your throat this time there should be no vibration, in words such as "thanks" and "thought."

所以，如果你這次摸到喉嚨，應該沒有震動，用 "謝謝"、"想 "等詞。

So, give it a try now and put your hand on your throat and feel if there is a vibration, making sure you do not use your voice.

所以，現在就試一試，把手放在喉嚨上，感受一下是否有震動，一定不要用聲音。

And let's compare two words: one of them has the unvoiced "th" and the other has a different sound that's a common mistake.

我們再來比較一下兩個字：其中一個字的 "th "不發聲，另一個字的聲音不一樣，這是一個常見的錯誤。

So, one mistake is that people will make an "s" sound instead of saying "think" they might say "sink."

所以，有一個錯誤是，人們會發出 "s "音，而不是說 "想"，他們可能會說 "沉"。

So, compare the shape with the tongue out in "think" to the tongue being inside the mouth in "sink."

所以，把 "想 "中舌頭在外面的形狀和 "沉 "中舌頭在嘴裡的形狀進行對比。

Another mistake is to create a "t" sound, which also involves the tongue inside the mouth.

另一個錯誤是製造 "t "音，這也涉及到舌頭在口腔內。

So, instead of saying "thin," someone might say "tin," which involves a quick burst of air and a release of the air.

所以，有人可能會說 "錫"，而不是說 "薄"，這涉及到空氣的快速爆發和空氣的釋放。

The difference is that in the "th" sound there is a steady flow of air creating friction through the teeth as it's resting on the tongue.

不同的是，在 "th "音中，當它停留在舌頭上時，會有穩定的氣流通過牙齒產生摩擦。

So, once again, we practiced the words, "thought," "thanks," and we also compared "think" and "sink" and "thin" and "tin."

於是，我們又一次練習了 "想"、"謝"，還把 "想 "和 "沉"、"薄 "和 "錫 "進行了比較。

So, those are really good and minimal pairs to practice if you have a common mistake.

所以，這些都是非常好的，也是最小的對子，如果你有常見的錯誤，可以練習。

It's good to compare those two sounds so that you can hear the difference between the two sounds, and you can produce the difference between those two sounds.

比較一下這兩個聲音就好了，這樣你就能聽出這兩個聲音的不同，你就能產生這兩個聲音的不同。

It was great practicing with you!

和你一起練習很開心!

It's time for you to practice on your own, and thank you for watching!

現在是你自己練習的時候了，謝謝你的觀看!