Unit 3 The world of science Section B Using language-2022-2023学年高一英语下学期同步精品课堂（外研版2019必修第三册）

Unit 3 The world of science Using language 1. This evening, I’ll be talking to Dr Richard Fairhurst, whose new book The New Age of Invention ___just _____ _________ has been published 2. I guess you _____ _____ _____(ask) about the title of your book before. have been asked Read the sentences. Step 1. Lead in Pay attention to the words in red. 4. New inventions like 3D printers _____ _____ ____ (use) to make replacement hearts and bone parts. have been used 5. Nothing like this ___ _____ ________ (invent) yet and I’d say we’re a long way from an invention like that at the moment! has been invented 3. In addition, important advances _____ _____ _____ (make) in medicine and environmental science thanks to increasing computer power. have been made 现在完成时的被动语态 　　现在完成时的被动语态强调过去的动作对现在造成的影响或结果, 但主语为动作的承受者, 表示“……已经被……”。 Step 2. Presentation 　　现在完成时被动语态的结构就是现在完成时态和被动语态结构的叠合, 即“have/ has been done”。 一、现在完成时态的被动语态的具体构成: 1. 现在完成时的被动语态的肯定式: have/ has been done。 Step 2. Presentation 2. 完成时的被动语态的否定式: have/ has not been done。 3. 现在完成时的被动语态的一般疑问句需将have/has提到主语的前面, 即Have/ Has+ 主语+ been done。 4. 现在完成时的被动语态的特殊疑问句: 特殊疑问词+ have/ has been done。 * They have been told many times not to make noises. 他们被多次告知不要喧哗。 *Has his bike been repaired? 他的自行车修好了吗? *Who has been invited? 谁受到了邀请? *(2019·全国卷Ⅰ)It is difficult to figure out a global population of polar bears as much of the range has been poorly studied. 由于对全球北极熊种群的研究不足, 因此很难确定其数量。 【即学即练】 (1)The experiment ___ _____ _____successfully. 这个实验做得很成功。 (2)The books _____ ___ _____ _________by the students. 那些书还没有被学生们借走。 has been done have not been borrowed (3)____ the sports meeting _____ ___ ___until next Friday? 运动会已经推迟到下周五了吗? (4)So even the olive wreath ___ _____ ________. 就连橄榄枝花环也被取代了。 Has been put off has been replaced 二、现在完成时态的被动语态的用法: 1. 现在完成时的被动语态同它的主动语态一样, 强调 过去的动作对现在造成的影响或结果, 通常与 already, yet, just, never, recently等副词连用。 *The room has already been cleaned. 房间已经被清扫干净了。(意为“已不用清扫办公室了”) * The doctor hasn’t been sent