Next, Chapter III:"Characteristics of verbs in the passive forms."
第三章：“被动句式中动词的特征”。
Solar energy has been put into full application through the two technologies of active and passive forms.
通过主动式和被动式两大技术可以使太阳能技术得到充分利用。
By the time you finish studying the verb tense tutorial, you (master) all twelve tenses including their passive forms.
等你修完了动词时态训练这门课，你就掌握了所有的十二种时态。
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