ID: 23713852

UNIT 3 The internet Period 4 课时学案 单元语法讲练(Discovering Useful Structures)课件(共33张PPT+ 学案 +练习)高中英语人教版(20

日期:2025-09-20 科目:英语 类型:高中试卷 查看:95次 大小:2089037B 来源:二一课件通
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    (课件网) Period 4  UNIT 3 THE INTERNET 主题语境 人与社会 ——— 科技发展与信息技术创新 课时学案 单元语法讲练(Discovering Useful Structures) 现在完成时的被动语态 一、现在完成时的被动语态的形式 肯定式 主语+have/has been done 否定式 主语+have/has not been done 一般疑问式 Have/Has (not)+主语+been done? 特殊疑问式 疑问词+have/has (not)+主语+been done? A new network has been set up. 一个新的网络已经被建立起来了。 To Tom's disappointment,his novel has not been published. 让汤姆失望的是,他的小说还没有被出版。 Has his bike been repaired 他的自行车修好了吗? How many residents have been invited to the conference 有多少居民接到了参会邀请? [即时训练1] 句型转换 The children have already been told the good news. ①将上面的句子变为否定句。 _____ ②将上面的句子变为一般疑问句。 _____ ③将上面的句子对the children进行提问。 _____ The children haven't been told the good news yet. Have the children been told the good news yet Who have been told the good news 二、现在完成时的被动语态的用法 1.表示过去发生的动作对现在产生的影响和结果,且这个动作与句子的主语有逻辑上的动宾关系。 I have been told the sports meet will be put off. 我已被告知运动会将要被推迟。(结果:现在我已经知道运动会要被推迟。) All the preparations for the task have been done,and we're ready to start. 这项任务的一切准备都已就绪,我们准备好要开始了。(影响:我们现已具备开始的条件。) 2.表示一个被动的动作或状态从过去开始,持续到现在,并且有可能继续持续下去。常与“for+时间段”或“since+时间点”等时间状语连用,此时,该被动语态的动词应使用延续性动词。 The machine has been repaired for two hours. 这台机器已被修了两小时了。(持续:2小时前开始修,现在可能已经修好,也可能没有修好,还要继续修。) She hasn't been heard from since then. 从那时候起,她就没来过信。(hear from是非延续性动词短语,用在否定句中,后可跟表一段时间的状语。) [名师点津] 常与现在完成时连用的时间状语: already 已经 recently/lately 最近 yet 已经;还 since then 从那时起 ever 曾经 ever since自那以来 by now 到现在为止 in recent years 在最近几年里 so far/up to now/till now/until now 迄今为止 in/during/over the past/last years 在过去的几年里 3.在状语从句中,常用现在完成时的被动语态代替将来完成时的被动语态。 I will go home when my homework has been finished. 当我的家庭作业已被完成时我就回家。(将来某时处于被完成的状态。) [即时训练2] 用现在完成时的被动语态改写句子 ①They have built many houses in the village in the past few years. →Many houses _____ in the village in the past few years. ②We have planted many trees on the hill in the last 5 years. →Many trees _____ on the hill in the last 5 years. have been built have been planted 三、使用现在完成时的被动语态要注意的问题 1.与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在的情况没有联系,而现在完成时的被动语态则强调与现在的情况有联系。 The park was opened to the public last year. 这个公园去年向公众开放。(说明动作发生在过去。) The park has been opened to the public. 这个公园已向公众开放。( ... ...

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