(
课件网) Period4 Discovering Useful Structures Unit 3 The Internet 英语 ① To analyse the form and feature of the present perfect passive voice. ② To find out the differences in meaning and function between the active and passive forms. ③ To master the function of the present perfect passive voice in the context and use it in real situations. Studying objectives: Key points： 1. To find out the differences between the active and passive forms. 2. To help students to learn and use the present perfect passive voice in the context. Difficult points： How to use the present perfect passive voice in real situations. Studying key points and difficulties: Lead-in Try to answer the following question using the present perfect passive voice. What aspects in your life have been changed since the appearance of the Internet Aspect Before After Transport Reading Payment Entertainment foot; bike; bus; train plane; high-speed rail paper books E-books in cash; by credit E-payment watch movies in the theater… Stream movies and music; chat online… Observation and analysis 1. Jan’s life has been greatly improved by the Internet. The Internet has greatly improved Jan’s life. 2. Much has been written about the wonders of the World Wide Web. People have written much about the wonders of the World Wide Web. Active _____ Passive _____ The form of the present perfect passive voice Verb form have/has +v-ed have/has been +v-ed Activity 1 Read the pairs of sentences. Highlight and compare the different verb forms. Activity 1 Change the sentences into the present perfect passive voice. Practice (1) The Internet has changed the way we communicate. (2) We have downloaded softwares to help us book hotels and tickets online. (3) Have you read this famous book on the website (4) More recently, many teachers have taught courses with computers. The way we communicate has been changed by the Internet. Softwares have been downloaded by us to help us book hotels and tickets online. Has this famous book been read by you on the website More recently, courses have been taught by many teachers with computers. Practice Fake news _____(mix) with the real news on the Internet. Personal information_____(leak) in some online activities. Cyberbully_____(seen) more often nowadays. It seems that more health problems _____(cause) by mobile phones. The girl is upset because all her money_____(steal) from her account by a hacker. Complete the sentences with the present perfect passive voice of the given verbs. has been mixed has been leaked has been seen have been caused has been stolen Activity 1 Change the sentences into the present perfect passive voice. Activity 2 Summarize the differences in meaning and function between the active and passive forms. Practice The object in an active sentence becomes the subject in a passive sentence. Both sentence types convey a similar meaning, but they are slightly different. Active sentences ar ... ...
