被动语态.doc.doc

被动语态的用法小结被动语态表示句子的主语和谓语动词之间是被动关系，其句子的谓语动词是“be+及物动词的过去分词”。此外，被动语态的句子还有各种时态的变化，都体现在be上。例如：①Theworkwascompletedonawindynight.②Thiskindofchocolatehasbeenmadeseveraltimes.③Theroadwillbebuiltnextyear.④ThehousewasbeingcleanedwhenIcamehome.⑤Thesetreesmustbetakengoodcareof.下面我们详细的来了解一下：★使用被动语态的场合1、不知道或不必指出动作的执行者时。如：Computersarewidelyusedintransport.Thehousehasbeenbrokeninto.2、强调动作的承受者时。如：Athirdringwillbebuiltaroundthiscity.3、出于策略、婉转、礼貌等不提出动作的执行者时。如：Muchhasbeensaidbutlittlehasbeendoneabouttheissue.4、有些措词故意避免用主语，或用“有人”、“大家”之类，经常用it作形式主语构成被动语态结构。如：Itissaidthatanothersteelplantwillbesetupinthiscity.特别记住下列句型：Itishopedthat…希望……Itissupposedthat…据推测说……Itmustbepointedoutthat…必须指出……Itwillbeseenthat…由此可以看出……Itisknownthat…据说……Itiswellknownthat…众所周知……Itisbelievedthat…有人相信……Itisthoughtthat…人们认为……★主动语态变为被动语态转换图示：1、主动语态变为被动语态的步骤：（1）将主动句的宾语变为主语：注意：如果主动句的宾语是代词，需将其由宾格变为主格。如：Tomkilledhim.→HewaskilledbyTom.（2）将动词改为"be+过去分词"。注意：Theyheldameetingyesterday.→Ameetingwasheldbythemyesterday.他们昨天开会了。（3）将主动语态的主语改为be…放在谓语动词后