人教版高中英语必修2Unit3Using Language 课件

Mainly Revision Teaching goals • Knowledge aim : Revise key words and phrases about computers. • Ability aim: Learn about the advantages and disadvantages of computers and cellphones. • Moral aim: Arouse the interest in Information Technology. Master the learning strategy( 策略）of  MURDER Mood-setting（情绪调整） and Maintenance(保 持） Understanding Recalling（回忆） Details and Digesting（消化） Expanding（拓展） Review（复习） by Reading Weekly Slogan Just as a famous man once said, "Anything that has not destroyed me can only make me stronger." Mood-setting Maintenance(保持)and Understanding • What words and expressions can computers remind you of? • Nouns: hardware web-designer programmer • Verbs: search program • Adjectives: common private mouse monitorsoftware softpower load upload update updated out of date postforward (a message) unload Recalling Have a dictation of the key words and phrases. • Verbs: • Nouns: • Adjectives: • Adverbs: Details and Digesting，Expanding • Arise: ; , a probem or difficulty arises from sth. • Operate: • Apply: turn up take place occur handle a boat; run a machinecompany apply sth to (doing) sth apply oneself to (doing) sth be buriedabsorbed in doing sth devote oneself to doing sth get down to doing sth apply for a job Expanding：Learn by using • Discuss: How can we use computers wisely? • Advantages: • Disadvantages: • Conclusion: Let's talk together • Listen to others' opinions. 11:59:00 Can you give my students some suggestions on surfing the line? 14:57:48 The best idea is not to surf the line.For students,websites are not the ways to study，they are only for entertainment，yes or no？If some students sank into playing，my advice is not to say anything，but say in formal situations. • 15:09:34 we can use the Internet to search for the information we want • 15:09:58 The various information we search for through the Internet can broaden our horizon • 15:10:48 It can be used as an efficient tool for our daily communication and working 15:08:02 How can we take advantage of computers? Email from Photos of HKU • Computer is a great invention of human. It is widely used nowadays, from industrial companies to education of pupils and college students. As a PhD student in the University of Hong Kong, I find computers are extremely useful in every aspect of my academic and daily life. • First of all, to know what other researchers have done, we have to check the online database. A search engine I frequently refer to is Google Scholar, scholar.google.com.Once you know the researcher’s name, you can find what he has published, the name, publishing date and co-authors of the articles, • even the full text! Even if you have no idea about who is important in a particular research area, you can find an immense amount of information via Google. • Secondly, exchanging information and ideas with your supervisor, collaborators and peers is another important usage of computers. QQ is famous in China, which has changed the communication regulations of Chinese. I write email to others often. For the researchers, there are websites that aim to link them together, like researchgate.com, on which you can communicate with other research all over the world. • Then, you have to rely on computers to compute the data of your experiment, so as to examine your hypotheses. There is always tremendous data. You just cannot calculate by hand. • When it comes to the paper writing stage, it is convenient to accomplish and revise your literature using a computer. You can always seek help from the grammar checking function of Microsoft Word and online dictionaries. When you have it published, others can share and learn from your articles by searching and downloading them from the internet. • Students of HKU take advantage of computers almost every day. They read, write and communicate via computers. The University prepares a great number of public computers to satisfy the students’ need. • High school students might not be able to use computers everyday. When you are sitting in front of a computer, I suggest not spend all your time on computer games, but learn something useful for your future, like programming skills. Review by Task-based Reading. • Read the passage about computers and complete the outline. 1. communicate 2. exchange 3. e-mail 4. way 5. higher 6. contact 7. common 8. Despite 9. careful 10. private share however Homework Write a passage about the proper use of computers. Remember advice from the PHD in HKU I also suggest students in middle schools and primary school not spend much time on computers. According to a recent study by my supervisor Prof. Tan LH, the more time a pupil spending in front of a computer, the worse reading ability he might have.