被动语态复习要点
[被动语态的概念和构成]
被动语态表示主语是动作的承受者,它由“助动词be+及物动词的过去分词”构成。助动词be有时态、人称和数的变化,其变化规则与be动词完全一样。请看下表:
时态 被动语态的构成
一般现在时 am / is / are (not) done
一般过去时 was / were (not) done
一般将来时 am / is / are (not) going to be done 或will (not) be done
含情态动词的被动语态的构成: can / must / should (not) be done
