被动语态的英文ppt

be动词一共有八种基本形式：动词原形——be第一人称单数现在式——am第三人称单数现在式——is第二人称单、复数和第一、三人称复数现在式——are第一、三人称单数过去式——was第二人称单、复数和第一、三人称复数过去式——were过去分词——been现在分词——being。be动词可以作联系动词或助动词来使用。1. 联系动词。be动词作联系动词时，后面必须跟名词、形容词、副词、不定式、分词、动名词、介宾短语等作表语，否则意思是不完整的。be动词的意思是“是”或“在”，本身并无实际意义。如：My mother is a doctor.我的母亲是一名医生。I'm her mother.我是她的母亲。The girl is very beautiful.这位女孩很漂亮。The boys are away during the morning.男孩在早上就出去了。My work is to prepare dinner.我的工作是准备晚餐。One of my hobbies is making artificial flowers.我的爱好之一是制作人造花。His job is very interesting.他的工作很有趣。The cat is under the table.猫在桌子底下。2. 助动词。be动词作助动词时，后面可以跟现在分词构成进行时，或跟过去分词构成被动语态。My mother is stirring the gravy.我的母亲在搅拌肉汁。While he was having lunch, the phone rang.他在吃午饭时，电话铃响了。Jesus was hanged on the cross.耶稣被钉死在了十字架上了。All of the books in the library are lent for two-week periods.图书馆所有的书都有两周的借期。The problem being discussed is how to use the sixteen tenses of English.正在讨论的问题是如何运用英文中的16种时态。

被动语态4 步曲第1步：被动语态结构被动语态的时态通过助动词be的变化来表示。经常考查的被动语态结构有：一般现在时：am / is / are + 及物动词的-ed形式一般过去时：was / were + 及物动词的-ed形式一般将来时：will / shall + be + 及物动词的-ed形式现在完成时：have / has been + 及物动词的-ed形式含情态动词的被动句：情态动词（can / should / must等)+ be + 及物动词的-ed形式第2步：主动句变被动句☆主动句的宾语变为被动句的主语。当宾语含双宾语时，一般把代表人的宾语（即间接宾语）变为被动句的主语，而把直接宾语留作被动句的宾语。如果把主动句的直接宾语变为被动句的主语，则间接宾语前须加上介词（一般是for或to）。常接to的动词有：give, tell, lend, show, pass, hand等；常接for的动词有make, buy等。☆主动句的谓语动词变为被动形式，要注意助动词be的时态与主动句的时态保持一致，数与被动句的主语保持一致。☆主动句的主语变为被动语态中by的宾语（如为代词，主格要变为宾格）。第3步：被动语态特例展示特例1主动句中的谓语是“一感觉(feel)”、“两听(hear, listen to)”、“三使(make, let, have)”、“四看(see, watch, look, notice)”时，其后作宾语补足语的动词不定式不用to，但变为被动句时，动词不定式符号to要补上。如：Someone noticed Mr Yu leave the office at about 9 am.→Mr Yu was noticed to leave the office at about 9 am.特例2短语动词是一个不可分割的整体，在变为被动句时，不可丢掉构成短语动词的介词或副词，也不能将其拆开。如：The workers put up a tall teaching building in our school last year.→A tall teaching building was put up in our school last year第4步：考点预测训练将下列句子改为被动句。1. The professor will give the students an English speech tomorrow.An English speech to the students by the professor tomorrow.2. They have painted their new house blue.Their new house blue by them.3. Mom bought me an MP4 player last weekend.I an MP4 player by Mom last weekend.An MP4 player by Mom last weekend.4. The joke Lisa told made all of us laugh.All of us by the joke Lisa told.5. You should take good care of these books.These books .参考答案：1. will be given 2. has been painted3. was bought; was bought for me4. were made to laugh 5. should be taken good care of