1、,一般现在时的被动语态,语法专项课件,一般现在时被动语态的定义和结构,被动语态变化步骤 误用人称代词 混淆主、被动谓语结构,被动语态的定义,语态：表示主语和谓语动词之间的关系。 英语有两种语态，即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。,被动语态的定义,Many students study English.(主动语态) English is studied by many students.(被动语态),动作的执行者,动作的承受者,被动语态的结构,be + 过去分词,am is are,一般现在时,被动语态的结构,一般现在时被动语态的句式,
2、肯定句：主语+am/is/are +过去分词+其他.,否定句：主语+am/is/are +not+过去分词+其他.,疑问句：Am/Is/Are + 主语 + 过去分词+其他？,Shoes are made by them.,Shoes are not made by them.,Are shoes made by them?,易错点1,被动语态变化步骤,四部曲,第一步：主宾互换。,第二步：谓语动词变为“be+过去分词”，并通过be的变化来表达出不同的时态。,第三步： “be+过去分词” + by +原主语。 （有时by+原主语可省）,第四步：时间、地点状语等保持一致。,主变被四步曲,易错点1,
3、被动语态变化步骤,宾变主,主变宾,前加by 动变被,看清be, 结构分别be+ pp,by many students.,Many students study English.,English,is studied,易错点2,Jim often sees us. （转化被动语态）,Us are often seen (by Jim). We are often seen (by Jim).,误用人称代词,如果主动语态句子的宾语是人称代词，在变被动语态时要用其对应的主格形式。,易错点3,Does he do a lot of work every day?（转化被动语态）,Does a lot
4、 of work done (by him) every day? Is a lot of work done (by him) every day?,混淆主、被动谓语结构,不要把主、被动谓语结构混在一起，尤其在否定句和疑问句中。 （被动语态要以be done为中心谓语结构）,【典例1】In some countries, tea _ with milk and sugar. A. is serving B. is servedC. serves D. served,考查语态。句意：在一些国家，茶被加入牛奶和糖作为招待品。tea为“动作的受动者”，选用被动语态，结构为be done；根据句意，客观事实要用一般现在时，tea为第三人称单数，故答案选B。,考查语态之间的转换。句意：两个医生和十个护士组成了这个医疗小组。首先主、宾调换位置，第二步：谓语结构要变化（be done），be动词根据主语（原宾语the medical team）选用is；动词变成过去分词made。,【典例2】Two doctors and ten nurses make up the medical team （转化被动语态）,The medical team is made up of by two doctors and ten nurses.,
