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everyone-can-use-english/1000-hours/sounds-of-american-english/3.2.6-θð.md
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# 3.2.6. <span class="pho">θ/ð</span>
对很多人来说,<span class="pho">θ/ð</span> 相对较难 —— 主要是因为很多语言中没有这两个音,比如,中日韩都一样,都没有这两个音。
## 3.2.6.1. 示例
<table>
<tbody>
<tr>
<td colspan="2"><strong>British</strong></td>
<td colspan="2"><strong>American</strong></td>
</tr>
<tr>
<td>D.J.</td>
<td>例词Example</td>
<td>IPA</td>
<td>例词Example</td>
</tr>
<tr>
<td><span class="pho">θ</span><span class="speak-word-inline" data-audio-uk-male="/audios/uk_phonetics_sound_think_2023feb.mp3"></span></td>
<td><b>th</b>ank <span class="pho alt">θæŋk</span><span class="speak-word-inline" data-audio-uk-female="/audios/thank-uk-female.mp3" data-audio-uk-male="/audios/thank-uk-male.mp3"></span></td>
<td><span class="pho">θ</span><span class="speak-word-inline" data-audio-us-male="/audios/us_phonetics_sound_think_2023feb.mp3"></span></td>
<td><b>th</b>ank <span class="pho alt">θæŋk</span><span class="speak-word-inline" data-audio-us-female="/audios/thank-us-female.mp3" data-audio-us-male="/audios/thank-us-male.mp3"></span></td>
</tr>
<tr>
<td><span class="pho">ð</span><span class="speak-word-inline" data-audio-uk-male="/audios/uk_phonetics_sound_this_2023feb.mp3"></span></td>
<td><b>th</b>is <span class="pho alt">ðɪs</span><span class="speak-word-inline" data-audio-uk-female="/audios/this-uk-female.mp3" data-audio-uk-male="/audios/this-uk-male.mp3"></span></td>
<td><span class="pho">ð</span><span class="speak-word-inline" data-audio-us-male="/audios/us_phonetics_sound_this_2023feb.mp3"></span></td>
<td><b>th</b>is <span class="pho alt">ðɪs</span><span class="speak-word-inline" data-audio-us-female="/audios/this-us-female.mp3" data-audio-us-male="/audios/this-us-male.mp3"></span></td>
</tr>
</tbody>
</table>
## 3.2.6.2. 舌尖起始位置
<table>
<tbody>
<tr>
<td><img src="/images/articulator-tongue-tip-positions.svg"></img></td>
<td><img src="/images/articulator-tongue-tip-th.svg"></img></td>
</tr>
</tbody>
</table>
虽然,学校里的英语老师们都强调说,发这两个音的时候要用牙齿咬住一点点舌尖再发声,也就是说,舌尖要伸出牙齿一点点 —— 这么做当然发声更为清楚,在读单个音节或词汇的时候尤为明显……
但是,在**连贯的自然语流**之中,会有大量处于**非重音**位置的 <span class="pho">θ/ð</span> 发声时舌尖起始位置并没有伸到牙齿之外,只是**贴在牙齿**上而已 —— 即,位置 ①。反过来,即便是处于**重音**位置的 <span class="pho">θ/ð</span>, 也一样可以把发声动作**简化**一下,只要把舌尖贴到牙齿上,而后开始发音即可。
最初练习的时候,可以借助 <span class="pho">s/z</span> 作为辅助:
> * 先发 <span class="pho">s</span> 的音,而后,把舌尖往前推一点点就接触到了牙齿,然后以与 <span class="pho">s</span> 同样的方式发音,就能听到 <span class="pho">θ</span>;然后分别说两个词 *sink* <span class="pho alt">sɪŋk</span><span class="speak-word-inline" data-audio-us-male="/audios/sink-us-male.mp3" data-audio-us-female="/audios/sink-us-female.mp3"></span> 和 *think* <span class="pho alt">θɪŋk</span><span class="speak-word-inline" data-audio-us-male="/audios/think-us-male.mp3" data-audio-us-female="/audios/think-us-female.mp3"></span>……
> * 先发 <span class="pho">z</span> 的音,而后,把舌尖往前推一点点就接触到了牙齿,然后以与 <span class="pho">z</span> 同样的方式发音,就能听到 <span class="pho">ð</span>;然后分别说两个词 *zed* <span class="pho alt">zed</span><span class="speak-word-inline" data-audio-us-male="/audios/zed-us-male.mp3" data-audio-us-female="/audios/zed-us-female.mp3"></span> 和 *that* <span class="pho alt">ðæt</span><span class="speak-word-inline" data-audio-us-male="/audios/that-us-male.mp3" data-audio-us-female="/audios/that-us-female.mp3"></span>……
## 3.2.6.3. 常见拼写
### <span class="pho">θ</span>
* **th**
* think <span class="pho alt">θɪŋk</span> <span class="speak-word-inline" data-audio-us-male="/audios/think-us-male.mp3" data-audio-us-female="/audios/think-us-female.mp3"></span>
* bath <span class="pho alt">bæθ</span> <span class="speak-word-inline" data-audio-us-male="/audios/bath-us-male.mp3" data-audio-us-female="/audios/bath-us-female.mp3"></span>
* wealth <span class="pho alt">welθ</span> <span class="speak-word-inline" data-audio-us-male="/audios/wealth-us-male.mp3" data-audio-us-female="/audios/wealth-us-female.mp3"></span>
### <span class="pho">ð</span>
* **th**
* this <span class="pho alt">ðɪs</span> <span class="speak-word-inline" data-audio-us-male="/audios/this-us-male.mp3" data-audio-us-female="/audios/this-us-female.mp3"></span>
* then <span class="pho alt">ðen</span> <span class="speak-word-inline" data-audio-us-male="/audios/then-us-male.mp3" data-audio-us-female="/audios/then-us-female.mp3"></span>
* with <span class="pho alt">wɪð</span> <span class="speak-word-inline" data-audio-us-male="/audios/with-us-male.mp3" data-audio-us-female="/audios/with-us-female.mp3"></span>