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人教新目标版英语七下Unit 6《I’m watching TV》（Section B 1a-1e）说课稿一. 教材分析人教新目标版英语七下Unit 6《I’m watching TV》（Section B 1a-1e）主要围绕着日常生活中的休闲活动展开。
通过本节课的学习，学生能够掌握描述日常活动的一般现在时态，以及如何用英语询问和回答他人正在做什么。
本节课的语言目标包括：能够听懂、说出一般现在时态的句子；能够正确运用“What are you doing? I’m doing…”进行问答。
同时，教材还通过丰富的情境和任务型活动，培养学生的合作意识和跨文化交际能力。
二. 学情分析七年级的学生已经具备了一定的英语基础，能够听懂并运用简单的英语进行交流。
但是，对于一般现在时态的运用还不够熟练，需要通过本节课的学习进一步巩固。
同时，学生对于描述日常活动的词汇和表达还不够熟悉，需要在课堂上进行大量的练习和运用。
三. 说教学目标1.知识目标：学生能够掌握一般现在时态的构成和用法，能够用英语描述自己和他人的日常活动。
2.能力目标：学生能够听懂、会说、会写一般现在时态的句子，能够用英语进行简单的问答。
3.情感目标：通过本节课的学习，学生能够培养良好的学习习惯，提高学习英语的兴趣。
四. 说教学重难点1.教学重点：一般现在时态的构成和用法，以及描述日常活动的词汇和表达。
2.教学难点：一般现在时态的句子结构，以及如何正确运用一般现在时态进行问答。
五. 说教学方法与手段1.教学方法：采用任务型教学法，通过丰富的情境和活动，激发学生的学习兴趣，提高学生的参与度和积极性。
2.教学手段：利用多媒体课件、图片、卡片等辅助教学，创设真实、生动的学习情境，帮助学生更好地理解和运用语言。
六. 说教学过程1.导入：通过播放一段关于日常活动的视频，引导学生思考并讨论：What are they doing? 从而引出一般现在时态的概念。
Unit 6 I’m watching TV语法攻关现在进行时表示此时此刻正在进行的动作或现阶段持续发生的事情，要用现在进行时态。
下面我们就一起来看看吧！现在进行时的构成及句式1。
构成：be （is， am， are) + v. -ing (动词原形加—ing ).2。
句式：肯定句:主语 + be + v。
—ing + 其他. 如:She is eating a banana. 她正在吃香蕉.I am doing my homework。
我正在做作业。
They are singing in the classroom。
他们正在教室里唱歌。
否定句:主语 + be + not + v. -ing + 其他。
如：She is not eating a banana。
她没有在吃香蕉.I am not doing my homework.我没有在做作业。
They are not singing in the classroom.他们没有在教室里唱歌.一般疑问句：Be + 主语 + v。
-ing + 其他? 如：Is she eating a banana？她正在吃香蕉吗?Are you doing your homework?你正在做作业吗？Are they singing in the classroom？他们正在教室里唱歌吗?特殊疑问句：特殊疑问词 + be + 主语 + v。
—ing + 其他？如：What are you doing? 你在做什么？What are they doing in the classroom？他们正在教室里干什么？现在进行时的标志1. “now （现在)”、“at the moment (此时)”是现在进行时常用的时间状语。
如：My parents are making bread now.我父母现在正在做面包.The girl is watching TV at the moment.女孩此时正在看电视.2。
Unit6 I’m watching TV一、词组、短语及用法1.do one’s homework （此处的do是“做”的意思）2.talk on the phone 打电话交谈3.watch look see read 的大致区别：watch 观看，看watch TV 看电视watch a football game 看一场足球比赛see 看见（看的结果）I can see the bird in the tree.look 看（看的动作）Please look at the blackboard.read 阅读，读书，读报She is reading a story.4.go to the movies 去看电影5.That sounds good. 那听起来不错 show 电视节目7.at six o’clock 在六点钟8. wait for sb /sth 等侯某人/某物9. all 、also 、often 、never 等副词应该放在be动词，情态动词及助动词之后，行为动词之前。
He never stop talking. I often get up at six.We are all students.The boys can also swim.They all like English. Lions also come from South Africa.10. thanks for sth 谢谢某物Thanks for your letter.thanks for doing sth 谢谢做了某事Thanks for joining us.11. some of + 宾格代词（us / you /them ）some of us 我门当中的一些人Some of +名词复数some of the students 一些学生12. in the first /second /next / last photo 在第一/第二/下一个/最后一张照片里13. at school 在学校at home 在家at the pool 在游泳池at the mall在商店14. be with sb 与某人一起He is with his parents. 他和他的父母在一起。
七年级英语下册 Unit 6 I’m watching TVPeriod 1 Section A 1a-1c【学习目标】1.学习使用1a中的动词短语.2.学习现在进行时态.3.学会运用常用的动词短语，谈论人们正在做什么.【学习过程】一、预习指导与检测（一）预习指导：A.预习P25生词 ,做到会读知意.B.复习已学过的动词短语.做作业吃午饭在打电话看电视听音乐打篮球C.知识点拨：1.现在进行时表示现在（说话瞬间）正在发生或正在进行的动作或者是某种状态，也可表示当前一段时间内的活动或现阶段正在进行的动作。
其结构是由助动词be（am,is,are）+v-ing形式构成的。
2.eg --What are you doing?--I’m doing homework.3.仔细观察，检查下列动词的现在分词是否正确，并总结动词ing形式变化语法归类。
do -- doing go -- going read -- readingwatch -- watchingread -- reading eat -- eating clean -- cleaninghave -- havingwrite -- writng dance -- dancing run -- runningswim -- swimmingdie -- dying（死 lie –lying（撒谎） tie –tying (系、捆)1.2.3.4.（二）预习检测：完成1a并翻译其中短语1. doing homework2.watching TV3.cleaning4. eating dinner5.reading6.talking on thephone二、课堂互动探究1.Pairwork: 使用句型What are you doing? I’m…谈论正在进行的动作。
2.得分小能手：看谁能用现在进行时态造句，并造的又多又准确，注意动词ing的结构哟。
Unit 6 I’M Watching TV基础知识检测试题一、短语翻译1. 看报纸_____________________2. 包粽子_____________________3. 洗衣服_____________________4. 出去吃饭___________________5. 喝茶_____________________6. 做汤_____________________7. 在电话中交谈_____________ 8. 禁止拍照_______________9. 去看电影_________________ 10. 寄宿家庭________________11. 读故事给某人____________ 12. 观看龙舟赛______________13. 居住在某地______________ 14. 同某人一起住____________15. 去购物______________ 16. 去跳舞__________________17. 使用电脑________________ 18. 有点无聊________________19. 没做什么________________ 20. 一个游泳池______________21. 其他任何一个晚上__________ 22. 因…而感谢_______________23. 拍照___________ 24. 访谈节目_______________25. 希望做某事_____________ 26、等待某人______________27、看医生_________________ 28、看电影________________29、看黑板_________________ 30、我的一张全家福_________二、重点知识：1、四个看watch look see read 的区别：watch : 指长时间的观看某一活动。
如：看电视:____________，看一场足球比赛__________ see : 强调看的结果，意为“看见，看到”。
人教新目标版2013—2014年度下学期七年级英语教案主备人：备课时间：2014年月日成员：Unit 6 I’m watching TV.一、Teaching Goal：In this unit students learn to talk about what people are doing. Teach students how to cooperate and be good at watching something and love our lives.二、Teaching difficulties1. The vocabulary and the sentence structures.2. Learn the grammar: Present progressive tense.3. Oral practice using the target language.三、Teaching MethodsListening and practicing methods, pair work, Task-Based Learning method.四、Teaching AidsA tape recorder, some pictures and cards.五、Teaching Time: 5 periodsPeriod 1 (Section A:1a—2b)Teaching ProceduresStep 1.Revision1. Greetings.2. Revise the words and expressions in Unit 4.Step 2.Presatation: Lead in1. Do “Ask and answer” practice with the Ss.2. The teacher asks the students to give more verbs phrases and write them down on the blackboard.(show many pictures to help the Ss.)Teach the new words and expressions.3. Teach the Present Progressive.1）Introduction: Talk about the title of this unit. Show some pictures to introduce the Present Progressive tense.T: What’s she/he doing?Ss: She/He is v-ing (Help the Ss to answer the questions and show the sentences)2) Let the Ss to say what the Present Progressive is.3). Tell the differenceWrite down the V-ing forms by another lines of go, watch, do, play and eat . Ask the Ss to have a look and find the difference between them. For example: go and going, watch and watching, do and doing, etc. Then ask the Ss to read them again and do more exercises.Step3.Activity 1a:Match1. Help the Ss talk about the pictures. The Ss read these V-ing wordsafter the teacher. Match the words and the activities. Check the answers.2. Help the Ss do “Ask and answer” practice in pairs.3. Ask some Ss to do actions and let the class guess what he/she is doing.Step4.Activity 1b & 1c: Listening and pair work.1. Play the recording for the Ss to listen. Play again. Ss listen and write the number of the activity each person is doing. Check the answers.2. Pairwork: Ask the Ss to do “Ask and answer” practice about the picture in pairs. Some pairs present their dialogues to the class.Step 5.Activity 2a & 2b: Listening and Practice1.Activity 2a:Talk about the picture in 2b.Ask the Ss to read the questions in 2a. Then listen to the tape and and write the answers. Check the answers.2.Activity 2b:Play the recording again. Help the Ss put these questions and answers in order to make a conversation. Go through the answers with the Ss.Step 6 Pairwork: Activity 2c1.Talk about the pictures in 2c. Ask Ss to read the sample conversation. Let Ss look at the first group of pictures, and ask them to guess what the people are doing.2. Then imitate the sample conversation, work in pairs. Some pairs present their dialogues to the class.3. A guessing game: Guess the activities according to the Ss’ actions.Step 7 Homework: 1.Copy the new words and recite.2.Make up their own dialogues.教学后记：Period 2 (Section A:2d—3c)Teaching aimsGo on learning to talk about what people are doing.Language points1.To learn the following sentences.⑴—Is Nancy doing homework ?—Yes, she is ./No, she isn’t .She is writing a letter.⑵—Do you want to go to the movies? —Yes ,I do .⑶—When do you want to go? —Let’s go at six o’clock.2.To learn the following words and phrases:⑴adjective: sure⑵verb phrases: wait for , talk about , talk to sb.Teaching difficultiespresent participle: run-running , write-writing Present progressive tense: Subject +be+doing +…Teaching stepsWarming-up and revision⑴Watch VCD which is connected with the present progressive tense.⑵RevisionThe teacher asks Ss to do some actions, ask and answer one by one (chain work)T: What are you doing? S1: I am reading an English book. What are you doing ?S2: I am writing .What are you doing ? S3: I am playing the guitar. What are you doing?Show some pictures, point to them and ask.T: Look at picture 1! What is he /she doing ? S1: He/She is talking on the phone.T: Look at picture 2! What are they doing? S2: They are singing and dancing.T: Look at picture3. What is he doing? S3: He is swimming.2. PresentationThe teacher asks one student to come to the blackboard and do an action.T: Are you playing soccer? S: No, I’m not.T: Are you playing basketball? S : Yes, I am.Ask more students like this.PracticeHave students make a similar dialogue like thisS1: Are you reading a book? S2: No, I am not.S1: Are you reading a newspaper ? S2: Yes ,I am.4. Guessing gamesThe teacher uses pictures to ask the students. Cover one part of the picture and then uncover it little by little.T: What is he doing ? S1: Is he playing the computer?T: No, he isn’t . S2: Is he playing the guitar? (show another picture)What are they doing? Teacher continues to ask students and shows them more pictures.5. Pair work (work on 2c)T: let’s look at the pictures and guess what the people are doing. Please practise in pairs.A: Is Nancy writing a letter? B: No, she isn’t. She is writi ng a letter. Then check the answers.6. Work on 3aT: Look at the pictures and make conversations. Please write the correct number of the pictures next to the conversations below. Then check the answer. [Conversation A=3 Conversation B=2 ]The teacher reads the conversation before the class, and the Ss repeat the sentences. Ss practice the conversation in pairs and act out the conversation.7. Pair work（work on 3c）（1）Show a picture and teach the new phr ase“wait for a bus”.（2）Look at the pictures and answer the questions below. Ask Ss ask and answer like this.S1: Where is he? S2: He is in the store/ the supermarket.S1: What is he taking? S2: He is taking a bottle of juice.S1: What is he waiting for? S2: He is waiting for a bus.（3）T: Please look at the pictures again and talk about the four pictures.8. Grammar FocusWhat are you doing? What is he/she doing?I am watching TV. He is doing homework.Is he/she doing? Yes, he/she is./No, he/she isn’t/Are they doing? Yes, they are./ No, the y aren’t.9. HomeworkRead and recite 3a.Write the story about the four pictures.教学后记：Period 3 (Section B:1a-1e)Teaching aims询问别人正在哪里干某事. 继续学习某人正在干某事.Teaching pointsTo learn the following sentences.—Where do people play basketball? —At school.—Where is he swimming? —He is swimming at the pool.To learn the following vocabularies: toy, shopping, mall, pool.Teaching stepsWarming-up. chant and revisionChantWhat are you doing? I’m reading books.What is he doing? He is watching TV.What is she doing? She is doing homework.What are they doing? They are eating dinner.Revision Ask a student to do an action and askT: Are you eating breakfast? S1: No, I’m not .T: Are you singing? S2: Yes, I am .T: Is he writin g a letter? S3: No, he isn’t .T: What is she doing? S4: She is singing .T: Are you reading a newspaper? (To another student)S5: No, I’m not .T: What are you doing? S6: I am reading an English book .T: Is he reading a Chinese book? S7: No, he isn’t .T: Is she reading an English book? S8:Yes, she is .PresentationShow some pictures and present the new vocabularies .T: What is he doing?S1: He is swimming .T: Where is he swimming?S2: He is swimming in the river .T: No, he isn’t swimming in the river. He is swimming at the pool .T：Look! What are these? They are toys . What are the girl and her mother doing? They are shopping .T: Where are they shopping?S1: They are shopping in the store .S2: They are shopping in the supermarket .T: Maybe, look, they are shopping at the mall .PracticeShow some pictures and phrases, let Ss practice in pairs like this .A: What is he doing?B: He is boating .A: Where is he boating?B: He is boating on the river .Complete the chart . (work on 1a)T: Look at the pictures and complete the chart .Then check the answer .1). library reading books2). school playing basketball3). pool swimming4). mall shoppingPairworkLet Ss look at the chart , ask and answer in pairs .A: Where do people play basketball?B: At school .A: Where do people swim?B: At the pool .Listening comprehension2a. T: You will hear three short conversations. Please listen carefully and write down the places you hear in the chart below . Then check the answers: mall, school , library .2b. T: Now look at 1b on page 28. Please listen to the tape again and fill in the chart . Let’s write down what they are doing.Ss listen to the tape twice and write down the answer on their charts.7. Pairwork (work on 1c) .T: Now look at the chart and use the information in the chart to make a conversation like this .A: Hello! Is Tina there?B: No, she isn’t . She is at the mall .A: Oh, is he shopping at the mall ? / What is she doing ?B: No, she isn’t ./ She is eating lunch with a friend .8. Groupwork (Make a survey )1). T: Let’s make a survey, please ask Ss in your classroom where their parents are and what their parents doing now . Please ask and answer in threes, then fill in the chart .2.) After the Ss finish the survey .Let them give a report .9.Homework:1). Listen to the tape and repeat the conversation on Section B.2b.try to imitate the pronunciation and intonation.2). Collect some pictures and bring them to the classroom.3). Write the report down in the exercise book .教学后记：Period 4 (Section B:2a—2c)Teaching aims:Ss can use the present progressive tense to describe the pictures.Ss can ask and answer questions about the picture fluently.Language pointsTo use the following sentences:Here is a photo / picture of my family.I’m with my sister Gina.Thank you for your letter and the photosTo learn the following phrasesThank you for sth. / doing sth. be withTeaching difficultiesHow to write the sentences about the present progressive tense correctly.Teaching steps1.warming-up and revision(1)The teacher asks Ss some questions.T: Hello, how are you? S1: I’m great. Thank you.T: How is your father? S1: He is very well.T: Where is your father? S1: He is at the mall.T: What is he doing? S1: He is shopping.T: Is your father shopping now? S2: No, he isn’t. He is watching TV.T: Where is he watching TV? S2: He is watching TV at home.(2) Show some pictures, let Ss ask and answer the questions in pairs.S1: Look! What is she doing? S2: She is reading a book.S1: Where is she reading a book? S2: She is reading a book under a tree.2. Work on 3a.(1)Show the pictures of 3a and let Ss say it one by one.S1: He is playing basketball.S2: The girl is doing homework.S3: The boy is watching TV.S4: He is swimming.S5: They are eating and talking.(2) T: Here is a letter from Mike to his pen pal, Linda. Please read the letter and underline the activities and circle the places. Check the answers(3) T: Now read the letter again and number the photos, using 1,2,3,4.Check the answers: 1, 4, 2, 3(4) Let Ss work in pairs, ask and answer about the photos like this.A: What is Mike doing in Photo 1?B: He is playing basketball.A: Is he playing basketball at school?B: Yes, he is.3.WritingShow the pictures to the Ss and let Ss finish the sentences, then check the answers.They are dancing. He is running.Yao Ming is playing basketball.The teacher is writing. Xie Tingfeng is singing.4.Group workT: Now take out your photos or pictures, please work in fours and tell your partners about your pictures or photos. I’ll give you two minutes to practice it.T: At this time I’ll ask several students to say something about your photos.5. PracticeT: Take out the pictures or photos of your own and write one or two sentences about them.Ss write the sentences in their exercise books, the teacher walks around the class and see if the Ss can write the sentences correctly. Give Ss some help if necessary.The teacher collects some pictures and sentences, shows them to the Ss and checks the answers.6. Fill in the blanks. ( finish 2b)(1) T: Here is another photo, look at the photo and the letter next to it. Please take out your pens and fill in the blanks. Check the answers: watching TV reading the newspaper talking eating(2)Show the picture of 2b, let Ss say the picture like this:7. Homework.Write a short composition about your own photos or pictures.教学反思：Period 5 (3a-Selfcheck)Teaching aims:Revise the contents of Unit 6.Ss can use the present progressive tense correctly.Language pointsRevise the key words, phrases and sentences in this unit.To learn two new words: camera, birdKey points and teaching difficulties.Consolidate the present progressive tense.Teaching steps:Step 1 Warming-up and revisionLet one student take out a photo or a picture of his / her own and show it to the whole class, then he / she will ask some questions about the photo or the picture.S1: Where is my father?S2: He is…..S1: What is he doing?S3: He is…S1: Is my mother doing…?S4: No, she isn’t. She is …Ask more Ss to come to the blackboard to do it.Step 2 PresentationUse two pictures and present the new words: camera, birdT: What is this?S1: Sorry, I don’t know.T: It’s a camera. We can use a camera to take a photo.T: Look! What is it? S2: It’s a bird.T: That’s right. What is the bird doing?S3: I think it is singing.S4: I think it is flying.Step 3 Complete the storyT: Look at the pictures on Page 30, Part 3. please complete the story and write the sentences in the blanks.Check the answers:What is he doing? He is looking at the birds.What are they doing? They are talking.What is the boy doing? He is running.What is the boy carry? He is carrying a bag.What is in the bag? It’s a camera.What is the boy doing? He is taking a photo.Step 4 Divide the Ss into two parts and read the dialogue. Let Ss act out the dialogue.Step 5 Key words checkStep 6 HomeworkReview the key words and phrases.教学后记：。
按要求转换句型2. My sister is washing clothes now. (改为一般疑问句并作肯定回答)your sister clothes now?, .3. She often plays soccer after school. (用now改写句子)She soccer now.4. The boys often play basketball after school. (对划线部分提问)the boys often after school?5. The teachers are watching TV in the meeting room. (对划线部分提问)in the meeting room?A.waterB.wateredC.have wateredD.are watering2. --- What's that noise?--- Bob and his sister computer games.A.have playedB.are playingC.playedD.will play3. He sometimes a picture, but now he .A.draw; singsB.drawing; singingC.draws; is singingD.is drawing; sings4. --- stories every day?--- No. But now I .My mother .李雷正在使用电脑吗?Is Li Lei a ?汤姆晚饭后经常洗餐具。
Tom often after dinner.巩固提高人们不是在工作。
他们在吃午饭。
People . They lunch.is it?18. Tina is reading some books. (改为否定句)Tina reading books.19. The girls are watching a movie at the cinema. (对划线部分提问) the girls a movie?20. There is a photo of my friend. (改为复数句子)There some of my friends.一、单项选择17. What time18. isn't, any19. Where are, watching20. are, photos一、单项选择7 in Qingdao. She is 8 at No. 2 High School.She gets up 9 six every morning. After that, she 10 Chinese. She 11 breakfast at seven o'clock.Now it is seven o'clock in the morning. Miyoko 12 breakfast 13 her Chinese parents."Have another egg, Miyoko. It's just 7:15," her mother says. " 14 , thank you, Mom. I must go now. Wang Lili is waiting for me 15 the bus stop. Today, we are having a Chinese contest. Byebye, Mom."eseC.beD.are.11. A.hasB.is havingC.to haveD.having12. A.hasB.is havingC.to haveD.having13. A.withB.andC.toD.for14. A.YesB.NotC.NoD.Oh15.A.forB.atC.onD.in一、单项选择 1. A2. D3. C4. D5. A二、完形填空 6. A 7. C 8. C 9. D 10. A 11. A12. B13. A14. C15. B__________________________________________________________________________________________________________________________________________________________________阅读理解A1. Arthur's neighbors are .A.noisyB.angryC.singingD.sleeping2. The man in Apartment 3 is .A.painting his apartmentB.cleaning his apartmentC.fixing his apartmentD.moving3. The noisy people in Apartment 5 are .A.youngB.oldC.womenD.men4. The dog in Apartment 6 isn't .A.sleepingB.making noiseC.singingD.arguingC.think about one thingD.both A and B2. The living room is not a good place for study because it is too .A.quietB.noisyC.goodD.clean3. You'll feel tired easily if the light is .A.goodB.enoughC.badD.wonderful4. You should remember to before you study.A.clean the deskB.tidy the roomC.turn on the lightD.go to the bedroom5. The best title(标题) for this passage(文章) is .Scientists can do wonderful things with plants. They can make food just like meat and cheese. And they can make it without the help of animals. It is very good food, too. Now they have begun to say, "We make our paper from wood. We can also make food from wood. The next thing is not very difficult." What is the next thing? Perhaps it is food from paper. Scientists say, "We can turn paper into food. It will be good, cheap food. And it may be cheaper than meat of fish or eggs."So please keep your old books and letters. Don't feed them to your cat. One day, they will be on your plate, if what scientists say may come true.1. The writer asks us to keep our old books and letters because .A.they are useful for reading in the futureB.they may be used to feed cats nowC.now scientists can make food from woodD.scientists can do wonderful things with food3. What's the main idea of this passage?A.All food comes from plants in some way.B.It will not be long before food can be made from paper.C.Scientists can do everything wonderful with plants.D.Scientists can make food without the help of animals.阅读与表达(判断式)Today is Sunday. It is time to play games. Look! There is a child near the house. What is he doing? He is watering(浇) some flowers. Who are the man and the woman behind the house?They're workers. What are they doing? They are working. Look at the children near the river. They are Young Pioneers. Are they playing or working? Some are singing, some are playing games, and some are playing basketball. They are very happy.根据短文内容，判断正误，正确的为T，错误的为F。
Unit 6 I’m watching TV.一、学习目标询问和表达某人正在做什么。
掌握以下句型：—What are you doing?—I’m watching TV.—What’s she doing?—She’s washing her clothes.—Is he reading a newspaper?—Yes, he is. / No, he isn’t.二、重点、难点重点1. 单词：man, use, house, any, other2. 短语：talk on the phone, go to the movies, live with, study for a test3. 句型：1）— What are you doing? 你在做什么？—I’m watching TV. 我在看电视。
2）What time is it in Beijing? 在是几点？难点现在进行时的构成和句式一、单词领读use v.使用；运用other adj. 另外的；其他的pron.另外的人（或物）any adj.任何的；任一的pron.任何；任一二、重点单词【单词学习】☆☆1. use v.使用；运用【用法】及物动词。
【例句】—Can I use your bike? 我可以用一下你的自行车吗？—Sure. 当然可以了。
【拓展】（1）use n.用法；使用；用途（2）useful adj.有用的；有益的（3）useless adj.无用的【例句】He makes good use of his time. 他充分利用他的时间。
English is useful to you. 英语对你来说有用。
Why do you think it’s useless? 你为什么认为它没用呢？【考题】Can you help me ______ the puter? I think it’s very _______.A. use; usefulB. to use; uselessC. useful; useD. use; useless答案：A思路分析：help sb. （to） do sth.，故C项错误；根据前句“你能帮助我使用电脑吗？”可知“我认为它是很有用的”，故用useful。
