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教学用具: PPT
教学过程：
一、语态概述
英语的语态是通过动词形式的变化表现出来的。英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者。巧记为：主动、主动、主去动。
例如：Many people speak English.谓语：speak 的动作是由主语many people来执行的。
被动语态表示主语是动作的承受者，即行为动作的对象。巧记为：被动、被动、主被动。
例如：English is spoken by many people.主语English 是动词speak 的承受者。
好了，现在我们对被动语态的句子形式有了一个形象的认识，但英语句子是千变万化的，这时就需要你有“火眼金睛”了。下面，老师就来具体讲一讲被动语态的构成。
二、被动语态的构成
被动语态由“助动词be ＋及物动词的过去分词”构成。人称、数和时态的变化是通过be 的变化表现出来的。现以plant为例说明被动语态在各种时态中的构成。
1.We plant many trees every year.(一般现在时)
Many trees are planted (by us) every year.
2.We planted many trees last year.(一般过去时)
Many trees were planted (by us) last year.
3.We will plant many trees next year.（一般将来时）
Many trees will be planted (by us) next year.
4.We have planted many trees since last year.（现在完成时）
Many trees have been planted (by us) since last year.
5.We are planting many trees now.（现在进行时）
Many trees are being planted (by us) now.
6.We were planting many trees then.（过去进行时）
Many trees were being planted (by us) then.
7.We should plant many trees every year.（含有情态动词）
Many trees should be planted (by us) every year.
三、归纳总结
别看英语中一会儿主动被动一会儿现在时一会儿过去时啥的，好像看得咱们眼花缭乱啦。其实呢，这么一堆东西归纳起来，就两点：时态和语态。
一般现在时：am／is ／are ＋Vpp
一般过去时：was／were ＋Vpp
一般将来时：will／shall be＋Vpp
现在进行时：am ／is ／are being＋Vpp