Unit 3 The World of Science Grammar Present Perfect Passive 课件-2023-2024学年高中外研版（2019）英语必修第三册

Book3 Unit 3 The world of science Grammar Unit 3 现在完成时 (have/has + v-ed) 1) 表示说话时已经完成的动作，而且这个动作的结果对现在仍有影响; 2) 表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去。 Unit 3 被动语态 助动词be +及物动词的过去分词 be随主语的人称、数和时态的变化而变化。 当强调动作承受者，不必说出执行者或含糊不清的执行者时，多用被动语态。 Unit 3 Verb form Active Passive have / has + been + v-ed have /has + v-ed 现在完成时的被动语态 现在完成时被动语态的结构 主动 被动 Unit 3 现在完成时被动语态的意义 表示动作发生在过去, 到现在已经完成或对现在产生的影响。动词和主语构成被动关系。 肯定式：have/has + been + v-ed 否定式：have/has + not + been + v-ed 一般疑问句：Have/Has +主语+ been +v-ed? 特殊疑问句：疑问词+have/has +been+ v-ed? 现在完成时的被动语态 Unit 3 1.并不是所有动词都有被动语态。 happen, take place, break out, belong to, cost, last 等不及物动词或词组无被动语态。 Great changes have taken place in China since 1978. 2. 动词短语是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。 e.g. The orphans have been taken good care of here． 【考点提示】 Unit 3 3. 现在完成时与一般过去时被动语态的区别 一般过去时被动语态表示一个被动的动作发生在过去，其结果对现在没有影响； 现在完成时被动语态的动作或状态尽管发生在过去，但侧重说明该动作或状态对现在造成的影响或结果。 【考点提示】 Unit 3 The machine has been repaired． 机器已经修好了。(动作发生在过去，但对现在有影响，说明机器修好了，可以使用了。) The machine was repaired yesterday． 机器昨天修了。(强调机器是昨天修好的。) 【考点提示】 Unit 3 1. 将下面句子中的主动语态变为被动语态。 1) Nobody has heard of Susan since she moved .   ________________________________________. 2) We haven't given them anything to eat.    _________________________________________3) We have already discussed this question.    _________________________________________ Susan hasn't been heard of since she moved. This question has already been discussed. They haven't been given anything to eat. Unit 3 1) The same mistake _______________ (make) many times. 2) More than 100 famous films ________________ (show) in the city since July. 2.用括号内动词的正确形式填空。 has been made   have been shown Unit 3 3) For his tenth birthday, Carl wanted a bicycle but ________ (give) a guitar by his parents. 4) Although it _______________ (play) many times, he still loves it.  5) Three new schools _______________ (open) in our city in the past 5 years. has been played have been opened was given Unit 3 Rewrite the underlined parts using the present perfect passive. Grammar: Present perfect passive Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-printed hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine. They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting — in Brazil, people have given a new 3D-printed shell to a turtle injured in a forest fire! Unit 3 Grammar: Present perfect passive Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-printed hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine. They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting — in Brazil, people have given a new 3D-printed shell to a turtle injured in a forest fire! Many things in our lives have already been affected, Unit 3 3D-printed hamburgers have been served to customers in some restaurants in London. But perhaps the most significant success that has been achieved to date is in medicine. Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-printed hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine. They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting — in Brazil, people have given a new 3D-printed shell to a turtle injured in a forest fire! Grammar: Present perfect passive Unit 3 Within the next 80 years, our lives may be changed beyond recognition by 3D printing. It has already affected many things in our lives, right down to the food we eat. For instance, some restaurants in London have served 3D-printed hamburgers to customers. But perhaps the most significant success that people have achieved to date is in medicine. They have made human body parts, including a beating heart, with 3D printing technology. And it is not just humans who are benefiting — in Brazil, people have given a new 3D-printed shell to a turtle injured in a forest fire! Grammar: Present perfect passive Human body parts, including a beating heart, have been made with 3D printing technology. A new 3D-printed shell has been given to a turtle injured in a forest fire! Unit 3 Imagine you are Dr Moore. Look at the pictures and tell the police about the damage and loss to your lab. Use the present perfect passive where appropriate. Grammar: Present perfect passive Unit 3 Grammar: Present perfect passive 1. The lock on the door has been broken. 2. The window has been broken. 3. My two laptops have been stolen. 4. Beakers and test tubes have been destroyed. 5. The book case has been opened, and some files have been taken away while others have been thrown everywhere. 6. The robot has been damaged. Unit 3 Review grammar. Read the text on Page 26-27 again and underline all the sentences of the present perfect and present perfect passive voice. null, track 4 124739.055 $$