主动语态变被动语态课件ppt.ppt

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1、 学习目标和任务主动语态改被动语态的方法各时态形式的被动语态的构成结构下面各种时态的主动语态的构成结构下面各种时态的主动语态的构成结构 复习巩固复习巩固一般现在时：主语+am /is/ are+其它主语+v/v-(e)s+其它一般过去式：主语+was/ were+其它主语+v-ed+其它一般将来时：主语+will/shall +v.原形+其它主语+be going to +v.原形+其它过去将来时： 主语+would/should +v.原形+其它现在进行时： 主语+am/is/are + v-ing+其它过去进行时：主语+was/were +v-ing+其它现在完成时：主语+have/has

2、 +done+其它过去完成时： 主语+had +done+其它探索新知探索新知(一一)主动语态改被动语态的方法：主动语态：主语 + 谓语动词 + 宾语 +其它 （谁） （做） （什么）被动语态：主语 +be的适当形式+ +by+主语 （宾格变主格）及物动词的过去分词 （主格变宾格） 当主动语态中的主语为表示地点的名词时，在被动语态中应将其改为“in+名词”做地点状语。归纳总结归纳总结把主动语态改为被动语态可按把主动语态改为被动语态可按“一变、二一变、二套、三注意套、三注意 ”来进行。即：来进行。即： 变变把主动语态的把主动语态的宾语宾语改为被动改为被动语态的语态的主语主语，把主动语态的，把主动

3、语态的主语主语改为被动改为被动语态的介词语态的介词by的宾语的宾语(in+地点）地点）。 套套根据根据原句的时态原句的时态套用相应时套用相应时态。态。 注意注意注意人称的变化而引起的注意人称的变化而引起的主谓一致主谓一致问题。问题。探索新知（二）探索新知（二）各时态形式的被动语态的构成结构一般现在时：主语+am/is/are + done+其它一般过去时：主语+was/were + done +其它一般将来时：主语+will/shall/be going to + be+ done+其 它过去将来时：主语+would/should +be + done+其它现在进行时：主语+am/is/are

4、 + being + done +其它过去进行时：主语+was/were + being + done +其它现在完成时：主语+have/has +been +done +其它过去完成时：主语+ had +been + done +其它含有情态动词的被动语态：主语+情态动词 + be + done +其它主动语态主动语态被动语态被动语态一般现在时一般过去时一般将来时 过去将来时现在进行时过去进行时现在完成时过去完成时 含有情态动词的句子主语+am /is/ are+其它主语+v/v-(e)s+其它主语+was/ were+其它主语+v-ed+其它主语+will/shall +v.原形+其它主语

5、+be going to +v.原形+其它主语+would/should +v.原形+其它主语+am/is/are + v-ing+其它主语+was/were +v-ing+其它主语+have/has +done+其它主语+had +done+其它主语+情态动词+v原形+其它主语+am/is/are + done+其它主语+was/were + done +其它主语+will/shall+be+done +其它主语+be going to + be+ done+其它 主语+would/should +be + done+其它主语+am/is/are + being + done +其它主语+w

6、as/were + being + done +其它主语+have/has +been +done +其它主语+ had +been + done +其它主语+情态动词 + be + done +其它知识应用知识应用将下列主动语态的句子变为被动语态。1.The boy cleaned the desk a moment ago.The desk was cleaned (by the boy) a moment ago.2.She waters the flowers every day.The flowers are watered (by her) every day.3.They do

7、their homework after school.Their homework is done (by them) after school.4.Tom is cutting down the trees on the hill.The trees are being cut down by Tom on the hill. 知识应用知识应用 5.We will plant 2000 trees next year.2000 trees will be planted (by us) next year. 6.The police have caught the thief.The th

8、ief have been caught by the police.7.You must keep the room clean and tidy.The room must be kept clean and tidy.8. We had learnt 3000 words by the end of last term.3000 words had been learnt (by us) by the end of last term.9.Northwest China grows the best cotton.The best cotton is grown in Northwest

9、 China中考链接中考链接 Fill in the blanks with the Passive Voice. 1、Tea _ (grow) in Fujian. 2、Chinese _ (speak) in China. 3、The beds _ (use) for sleeping. 4、Our classroom _ (clean) yesterday evening. 5、The cars _ (make) in Beijing.is grownis spokenare usedwas cleanedwere made 小结：小结： 这节课这节课我们学习了什麽我们学习了什麽? ?懂

10、得了什么懂得了什么? ?探索新知探索新知(一一)主动语态改被动语态的方法：主动语态：主语 + 谓语动词 + 宾语 +其它 （谁） （做） （什么）被动语态：主语 +be的适当形式+ +by+主语 （宾格变主格）及物动词的过去分词 （主格变宾格） 当主动语态中的主语为表示地点的名词时，在被动语态中应将其改为“in+名词”做地点状语。探索新知（二）探索新知（二）各时态形式的被动语态的构成结构一般现在时：主语+am/is/are + done+其它一般过去时：主语+was/were + done +其它一般将来时：主语+will/shall/be going to + be+ done+其 它过去将来时：主语+would/should +be + done+其它现在进行时：主语+am/is/are + being + done +其它过去进行时：主语+was/were + being + done +其它现在完成时：主语+have/has +been +done +其它过去完成时：主语+ had +been + done +其它含有情态动词的被动语态：主语+情态动词 + be + done +其它