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# 2.2.11. <span class="pho">tr/dr</span>
<span class="pho">tr/dr</span> 和 <span class="pho">tʃ/dʒ</span> 不一样的地方在于,虽然发声时起始的舌尖位置相同,但,<span class="pho">tr, dr</span> 在发声之前嘴唇要有个缩小成圆形的动作,所以它们开头的音节,总是听起来夹带着一个 <span class="pho">w</span>*tree* <span class="pho">/triː</span>/ 听起来是 <span class="pho alt">tʃwiː</span><span class="speak-word-inline" data-audio-us-male="/audios/us/tree-us.mp3" data-audio-uk-male="/audios/us/tree-uk.mp3"></span>*dry* <span class="pho alt">draɪ</span> 听起来是 <span class="pho alt">dʒwaɪ</span><span class="speak-word-inline" data-audio-us-male="/audios/us/dry-us.mp3" data-audio-uk-male="/audios/us/dry-uk.mp3"></span>。
The difference between the sounds <span class="pho">tr, dr</span> and <span class="pho">tʃ, dʒ</span> lies in the way they are pronounced. Although the initial tongue position is the same for both sets of sounds, with <span class="pho">tr, dr</span>, there's a slight rounding of the lips before voicing. As a result, the starting syllables often sound as if there's a <span class="pho">w</span> blended in. So, the word *tree* <span class="pho alt">triː</span> can sound like <span class="pho alt">tʃwiː</span><span class="speak-word-inline" data-audio-us-male="/audios/us/tree-us.mp3" data-audio-uk-male="/audios/us/tree-uk.mp3"></span>, and *dry* <span class="pho alt">draɪ</span> can sound like <span class="pho alt">dʒwaɪ</span><span class="speak-word-inline" data-audio-us-male="/audios/us/dry-us.mp3" data-audio-uk-male="/audios/us/dry-uk.mp3"></span>.
很多地区的人基于自身母语的习惯,会把 <span class="pho">tr</span> 和 <span class="pho">dr</span> 分开着连续读出的。比如,*tree*,印度人可能会把它读成 <span class="pho alt">tɤ.riː</span><span class="speak-word-inline" data-audio-other="/audios/us/tree-ru-ru.mp3"></span>,其中的 <span class="pho">t</span> 干脆读成 <span class="pho">d</span>,并且 <span class="pho">r</span> 还会用齿龈颤音;再比如,*driver*,可能会被俄罗斯人读成 <span class="pho alt">dɤ.raɪvə</span><span class="speak-word-inline" data-audio-other="/audios/us/driver-ru-ru.mp3"></span>,其中的 <span class="pho">r</span> 同样会用齿龈颤音。
People from many regions, guided by the habits of their native languages, may pronounce <span class="pho">tr</span> and <span class="pho">dr</span> as separate, continuous sounds. For instance, someone from India might pronounce *tree* as <span class="pho alt">tɤ.riː</span><span class="speak-word-inline" data-audio-other="/audios/us/tree-ru-ru.mp3"></span>, with the <span class="pho">t</span> articulated as <span class="pho">d</span>, and the <span class="pho">r</span> as a [*voiced alveolar trill*](https://en.wikipedia.org/wiki/Voiced_dental,_alveolar_and_postalveolar_trills). Similarly, the word *driver* might be pronounced as <span class="pho alt">dɤ.raɪvə</span><span class="speak-word-inline" data-audio-other="/audios/us/driver-ru-ru.mp3"></span> by a Russian speaker, again using a voiced alveolar trill for the <span class="pho">r</span>.
## 拼写Spellings
### <span class="pho">tr</span>
* **tr**
* track <span class="pho alt">træk</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/track-us-male.mp3" data-audio-us-female="/audios/us/track-us-female.mp3"></span>
* tree <span class="pho alt">triː</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/tree-us-male.mp3" data-audio-us-female="/audios/us/tree-us-female.mp3"></span>
* trick <span class="pho alt">trɪk</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/trick-us-male.mp3" data-audio-us-female="/audios/us/trick-us-female.mp3"></span>
### <span class="pho">dr</span>
* **dr**
* drive <span class="pho alt">draɪv</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/drive-us-male.mp3" data-audio-us-female="/audios/us/drive-us-female.mp3"></span>
* dream <span class="pho alt">driːm</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/dream-us-male.mp3" data-audio-us-female="/audios/us/dream-us-female.mp3"></span>
* drink <span class="pho alt">drɪŋk</span> <span class="speak-word-inline" data-audio-us-male="/audios/us/drink-us-male.mp3" data-audio-us-female="/audios/us/drink-us-female.mp3"></span>