内容正文:
8B Unit3 Traditional skills语法课
Grammar:被动语态
一.概念&构成
英语动词有两种语态.,主动语态和被动语态。主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者。
如: They will build a new bridge over the river. (主动)
A new bridge will be built over the river. (被动)
汉语中常用“被”、“给”、“由”、“受”等词用来表示被动,而英语用: 助动词be + 及物动词的过去分词构成。 被动语态的时态、人称和数的变化 ,主要体现在be的变化上。
不同时态被动语态的结构如下:
一般现在时:am / is / are + done
一般过去时:was / were + done
一般将来时:shall / will + be done
情态动词的被动语态: 情态动词+be done
现在完成时的被动语态: have/has +been done
二. 主动语态与被动语态之间如何转换
1.把主动语态的宾语变为被动语态的主语。
2.把谓语变成被动结构(be+过去分词)
3.把主动语态中的主语放在介词by之后作宾语,将主格改为宾格。
We visited that factory last summer
主动语态
主语 谓语 宾语 状语
That factory was visited by us last summer
被动语态
主语 谓语 宾语 状语
练习:
All the people laughed at him.
改为:He was laughed at by all people.
They make the bikes in the factory.
改为:The bikes are made by them in the factory.
They don’t use the room .
改为:The room isn’t used by them .
we should plant trees every year.
改为:Trees should be pla