Unit 3 Discovering Useful Structures 课件-2022-2023学年高中英语人教版（2019）必修第二册

Unit 3 The Internet Period 3 Discovering Useful Structures New words battery Wi-Fi New words button file They’ve built a kind of new PC with more functions. New words New words Have you confirmed the Wi-Fi password? confirm sb in sth New words Have you pressed the button yet to copy the file? pressure n. 1. Before use, the _________ must be charged. 2. We have developed a new type of software with many _________(function). 3. I called the airport __________(confirm) my flight reservation a week before I left for Beijing. 4. In recent years，stress has been regarded as a cause of a whole range of medical problems，from high blood __________(press) to mental illness.［2016·上海卷］ 5. I selected a _________(文件) and _________(按) the delete key. battery functions to confirm pressure file pressed Let’s learn Read the pairs of sentences. Underline and compare the different verb forms. Jan's life has been greatly improved by the Internet. Much has been written about the wonders of the World Wide Web. The Internet has greatly improved Jan’s life. People have written much about the wonders of the World Wide Web. How do we form the present perfect passive voice? Fill the blank. Let’s learn Verb form Active Passive have/has + v-ed ____________________ have/has been + v-ed Change the sentences into the present perfect passive voice. EXAMPLE They’ve built a kind of new PC with more functions. ↓ A kind of new PC has been built with more functions. 1. I have downloaded the software to help my phone battery last longer. 2. Someone has lost an identity card. 3. Have you confirmed the Wi-Fi password? The software has been downloaded to help my phone battery last longer. An identity card has been lost. Has the Wi-Fi password been confirmed? 4. Have you pressed the button yet to copy the file? 5. Has anyone made a comment about the online database? Has the button been pressed yet to copy the file? Has a/any comment been made about the online database? Find out the differenc