1、Information TechnologyUnit 4Lesson 2Complete the short text with information from the article.identitiesa selectioncreate your own imagesexpress yourselfroom for creativitya few concernsin virtual worldsa source of riskcheat others onlinea positive lightLets check!Lets review!What is an avatar?a dig
2、ital identity; in computing, an image which represents you in onlion games, chat rooms, etc., and which you can move around the screen using the mouse or keysPart 1Lead inLead inWhat apps do you often use? What do you use then for?Part 2Words and ExpressionsWords and Expressionsaccommodation/kmden/n
3、. 住处e.g. Hotel accommodation is included in the price of your holiday.Words and Expressionssubscribe/sbskrab/vi. 订阅，订购e.g. Which journals does the library subscribe to?Words and Expressionspowerful/pafl/adj. 效能高的；强有力的；强壮的e.g. Only the intervention of powerful friends obtained her release.Words and E
4、xpressionslatest/letst/adj. 最新的；最近的e.g. Have you heard the latest news?Words and Expressionsreality/rilti/n. 现实；真实e.g. Will time travel ever become a reality?Words and ExpressionsVR (Virtual Reality) /vtul rilti/虚拟现实e.g. One day VR will revolutionize the entertainment industry.Words and ExpressionsA
5、R (Augmented Reality)/mentd rilti/增强现实e.g. Study of key technology in virtual urban design based on AR.Words and ExpressionsMR(Mixed Reality)/mkst rilti/混合现实e.g. Novel, Lightweight Flight Simulator System Based on MR. Words and Expressionsaccount/kant/n. 账户e.g. I dont have a bank account.Words and E
6、xpressionssoftware/sftwe(r)/n. 计算机软件e.g. Will the software run on my machine?Words and Expressionsdevice/dvas/n. 设置；装置e.g. A powerful device exploded outside the station.Words and Expressionsensure/n(r)/vt. 确保e.g. The book ensured his success.Words and Expressionsmaterial/mtril/n. 材料；素材e.g. What mat
7、erial is this dress made of?Words and Expressionsgender/dend(r)/n. 性别e.g. In French the adjective must agree with the noun in number and gender.Words and Expressionspress/pres/vt. 按钮e.g. She pressed her face against the window.Words and Expressionsbutton/btn/n. 按钮e.g. Adam pressed a button and waite
8、d for the lift.Words and Expressionsgoods/dz/e.g. The plastic bag contained all his worldly goods. n. 商品；货品Words and Expressionsfavour/fev(r)/n. 恩惠；善意的行为e.g. Can I ask a favour?Words and Expressionsconfirm/knfm/vt. 确认；证实e.g. His guilty expression confirmed my suspicions.Words and Expressionsdeliver/
9、dlv(r)/vi.&vt. 递送；传送e.g. Do you have your milk delivered?Words and Expressionserror/er(r)/n. 错误e.g. There are too many errors in your work.Part 3Listening and speakingBefore listening!Lets predict.Before listening to an interview with an app developer, read and answer the questions. Use the key word
10、s to help you. Then listen and check.1 Why are apps so popular?2 What are the difficulties in developing an app?3 What are the latest technologies used in apps?While listening!Listen and think.1 Why are apps so popular?2 What are the difficulties in developing an app?3 What are the latest technologi
11、es used in apps?Apps are popular because they are useful and make life easier.The difficulty is in solving real-world problems and finding what people need.The latest technologies used are VR, AR and MR.Listen again.AppsGeneral functionsUses of educational appsDifficulties in developing an app find
12、popular restaurants call for taxis find directions to different placesListen again.AppsGeneral functionsUses of educational appsDifficulties in developing an app allow students to choose their online teachers and subjects according to their personal interests and needs ensure that students can all e
13、njoy the same learning materialsListen again.AppsGeneral functionsUses of educational appsDifficulties in developing an app find out what people need solve real-world problemsAfter listening!Group work.Answer the questions using the information in Activity 3 to help you.1 What are some general funct
14、ions of apps?2 What can students do with educational apps?3 According to Li Xing, what are the difficulties in developing an app?4 If you are able to develop an app to solve a real-world problem, what problem would you like to solve? And how?Group work.1 What are some general functions of apps?2 Wha
15、t can students do with educational apps?General functions include: to find popular restaurants, call for taxis, find directions to different places, and so on.Students can choose their online teachers and sujects according to their personal interests and needs on educational apps.Group work.3 Accord
16、ing to Li Xing, what are the difficulties in developing an app?4 If you are able to develop an app to solve a real-world problem, what problem would you like to solve? And how?The difficult thing about developing apps is finding out what people need and solving real-world problems.I always feel stre
17、ssed when thinking about what food to cook and what ingredients to buy in a grocery to prepare for meals.Think and talk.Do you and your family have trouble in shopping online?Lets listen.Listen to two conversation.1 What help does Dad ask for in the first conversation?2 What help does Barbara Smith
18、ask for in the second conversation?Dad asks for help in setting up an account on a shopping app.The woman asks for help in finding out why her goods havent arrived.Lets listen.Listen and imitate. Complete the Talk Builder.Talk BuilderAsking for and Offering HelpAsking for Help1 _ with something2 _ s
19、et up an account3 I havent received the goods. _ and find out whats going on?4 _ check again?Can you help me outI cant figure out how toCan you do me a favourWould you be able toLets listen.Listen and imitate. Complete the Talk Builder.Talk BuilderAsking for and Offering HelpOffering Help1 _ downloa
20、g it?2 No worries. _ with that.3 _ help you?4 _ enquire about the order with the delivery man.5 _ anything else today?Do you need helpI can help youHow manyLet meCan I assist you withSpeaking!Pair Work.Role-play the following situations. Note the formal/ informal use of language.Student A: a mother
21、who wants to choose an app Student B: the son/ daughter offering to helpStudent A: a teeanager preparing for a party Student B: a friend offering to help to buy things online for Student APart 4HomeworkHomeworkRecite the key words and expressions.Write a passage about the app that can solve real-world problems and share with classmates next time .
