过去虚拟动词understood现在他在中国，他希望能懂得中文。

Now that he is in China, he wishes he understood Chinese.

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这个动词是虚拟语气。

The verb is in the subjunctive.

《牛津词典》

西班牙语的动词现在时有六种形态，过去时、未完成时、将来时、条件句、虚拟句以及另外两种过去时虚拟式也各自有六种形态，加起来一共是48种。

A Spanish verb has six present-tense forms, and six each in the preterite, imperfect, future, conditional, subjunctive and two different past subjunctives, for a total of 48 forms.

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