对一些英语初学者来说，“th” 发音有些难度。“This” 和 “thing” 都以 “th” 开头，但这两个词中的 “th” 发音一样吗？如何区分 “th” 的浊音 /ð/ 和清音 /θ/？看视频，跟主持人 Sam 学习 “th” 在单词中的两种发音。

Let's start with the shape of the mouth.

For both sounds, we put our tongue between our teeth and push air out between them.

The difference is that the first one is voiced, which means we use our vocal cords, and the second one is unvoiced, which means we don't use our vocal cords.

OK, try this:

Voiced – /ð/ vibrations.Unvoiced – /θ/ no vibrations.

Can you feel the difference?

Now let's practice with some common words you already know: this, thing, though, through, mother, birthday, clothes, fourth, bathe, bath.

And of course, it helps to put them in a sentence:

I never sunbathe, but I love a bath.

But remember to say them out loud, so you're practising the pronunciation.

“Th” 的两种发音嘴型一样：将舌头放在牙齿间，并将气推出。

发浊音 /ð/ 时，声带震动。以下单词中的 “th” 发浊音 /ð/：

the

this

that

though

mother

father

weather

clothes

bathe

breathe

there

worthy

发清音 /θ/ 时，声带不震动。以下常见单词中的 “th” 发清音 /θ/：

teeth

thing

thank

through

birthday

think

fourth

three

bath

breath

therapy

maths

worth