spoken是动词speak的过去分词形式，在句中作定语，修饰主语language,spoken 与 language有被动关系。该句可以理解为

What’s the language (which is) spoken in German?

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不是那种被动的软绵绵的爱的感觉，而是“去爱”——一个动词。

Not the passive squishy emotional feeling of love, but "to love" - the action verb.

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英语中还有一些主动语态的动词表示被动意义。

In addition, even some active verbs in English have passive meanings.

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本文论述英语动词被动语态的实质。

This paper deals with the essence of the passive voice of the English verb.

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本文论述英语动词被动语态的实质。

This paper deals with the essence of the passive voice of the English verb.

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