?

How to make the sounds

For the sound, first make the sound, and then use your voice. is voiceless, is
voiced. To make the sound, try making the sound with a /d/ in front of it. In ,
the tip of the tongue touches the tooth ridge; in , it does not.

要發(fā)的音，首先發(fā)的音（方法見Unit 5）,然后振動聲帶發(fā)聲。 是不發(fā)聲的，是發(fā)聲的。要發(fā)的音，先發(fā)的音再在前面發(fā)/d/的音。在音中，舌尖要碰到牙床，而是不需要的。

詳細的發(fā)音方法請參見視頻

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