Unit 3 Great Ideas Grammar in Use课件2026-2027学年仁爱科普版英语九年级上册

In this unit, you will learn to: • introduce the great inventions in the world. • be creative in your daily life. • use the text clues to understand the author’s viewpoint. • use the reading strategy of rereading. • design your dream invention. Big Question: What is invention in your eyes? u UNIT 3 Grammar in Use Exploring the Topic 学习目标 通过本节课的学习，同学们将能： 1. 掌握-en后缀的两种用法。 2. 区分en-前缀和-en后缀的不同含义。 3. 掌握被动语态的基本结构及用法。 4. 乐于和同伴交流分享，培养合作意识与沟通能力。 What’s this? What is it made of ? It’s a house. It is made of wood. It is a wooden house. Look and Say Grammar in Use The suffix -en What’s this? It’s a sweater. What is it made of ? It is made of wool. It is a woolen sweater. It is made of wood. It is a wooden house. It is made of wool. It is a woolen sweater. n.木头 adj.木制的 n.羊毛 adj.羊毛制的 名词+ -en 变形容词，多表示材质。 What’s this? It’s a ring. What is the color of it? It is golden . It is a gold ring. 注意： adj.金色的 材质， adj.金制的 Activity 1 Look at the pictures and read the sentences. Pay attention to the words in bold. Television can enrich people’s lives and broaden their minds. broad adj.宽阔的，广泛的 broaden v.开拓，拓展 He has a broad mind and accepts new ideas easily. 1.名词 形容词：多表示材质 例：wood wooden adj.木制的 2.形容词 动词：多表示“使······变得” 例：broad broaden v.开拓，拓展 Summarize the uses of suffix -en. Say more words with the suffix -en. 1. wide (adj.宽阔的) → widen (v.拓宽) 2. broad (adj.宽广的) → broaden (v.开阔；拓展) 3. sharp (adj.锋利的) → sharpen (v.磨尖；削尖) 4. weak (adj.虚弱的) → weaken (v.削弱) 5. bright (adj.明亮的) → brighten (v.使明亮；使愉悦) 6. dark (adj.黑暗的) → darken (v.使变暗) Activity 2 Make new words with the suffix -en and fill in the blanks with their correct forms. wood short wide dark + en 1. At first, Chinese people used ________ boards to print books. 2. The invention of movable type printing greatly improved printing quality and ________ printing time as well. 3. If you want to invent something, you need to ________ your knowledge. 4. When the sky began to ________, sailors had to depend on stars to find the right direction. wooden shorten widen darken Activity 3 Read the sentences and replace the parts in bold with proper words. I like this invention. In the past, pencils were sharpened by hand, but now pencils can be made sharp by using a small tool. Pencils can be ___________ by using a small tool. I like the invention of the light bulb. It makes the world around us bright at night. The light bulb is an important invention. It ___________ the world around us at night. sharpened brightens Television can enrich people’s lives and broaden their minds. en + rich → enrich v. broad + en → broaden adj. 前缀 en-（词首） VS 后缀 -en（词尾） 注意： 不是所有形容词都可以随便加-en！全部都是固定单词，不能自行创造！ Work in pairs to find the differences between前缀en-(词首) and 后缀-en(词尾)． Say more words with the prefix en-. 1. rich (adj.丰富的)→enrich(v.使丰富) 2. able (adj.能够的)→enable(v.使能够) 3. large (adj.大的)→enlarge(v.扩大) 4. danger (n.危险)→endanger(v.危及，使遭受危险) Memorize Grammar in Use Passive voice (I) Watch a video and learn about the basic structure and uses of the passive voice. You stayed up late last night, right? Hi, Kangkang, why do you look so tired? I was woken up by my mom too early this morning. Yes, I did. I made a model rocket last night. It was made for the model rocket show this Sunday. Pair work. Read the conversation. Pay attention to the passive voice of verbs. Activity 1 Activity 2 Complete the table and learn how to use the passive voice. Simple Present Passive Simple Past Passive Active Passive Active Passive do am/is/are done did was/were done 1. The passport ______________ (discover) in the Lost and Found. 2. Many art works ___________ (create) by young people today. 1. The airplane ______________ (invent) by the Wright brothers in 1903. 2. Clear instructions ___________ (prepare) to help the workers use the new machine. is discovered are created were prepared were invented Summarize structures of the passive voice in different tenses. 1. 一般现在时态的被动语态：am/is/are＋及物动词的过去分词。 2. 一般过去时态的被动语态：was/were＋及物动词的过去分词。 3. 一般将来时态的被动语态：will/be going to＋be＋及物动词的过去分词。 4. 现在进行时态的被动语态：am/is/are＋being＋及物动词的过去分词。 5. 过去进行时态的被动语态：was/were＋being＋及物动词的过去分词。 6. 现在完成时态的被动语态：have/has＋been＋及物动词的过去分词。 7. 过去将来时态的被动语态：would/should＋be＋及物动词的过去分词。 8. 含有情态动词的被动语态：情态动词＋be＋及物动词的过去分词。 9. 过去完成时态的被动语态：had been＋及物动词的过去分词。 Activity 3 Complete the text with the correct form of the given words. Post-it Notes _______________ (develop) by Dr. Spencer Silver and Art Fry. In 1968, Spencer invented a special type of glue by accident. This glue could allow things to stick lightly and to be pulled off easily. However, he did not know how to put it to use. In 1974, Art Fry found that the glue could _______________ (use) to keep the notes from falling and then created Post-it Notes. In 1977, Post-it Notes first appeared at the market and they became a great success in Boise, Idaho. Now, Post-it Notes _______________ (sell) all over the world. were developed be used are sold 被动语态的结构: be + 及物动词的过去分词 be动词随人称、时 态和数发生相应的变化。 一、规则变化 1. 一般情况：动词词尾直接 +ed work → worked; clean → cleaned 2. 以不发音字母e结尾：直接 +d invite → invited; create → created 3. 辅音字母 + y 结尾：变y为i，再加ed study → studied 4. 重读闭音节（辅+元+辅结尾）：双写末尾辅音字母，再加ed stop → stopped; plan → planned 二、不规则变化（P165-167） 当我们只需强调动作的承受者，或者不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者时，要用被动语态。动作的执行者一般由 by 引出或省略。 It was created by American scientists in 1997. 它于 1997 年由美国科学家创建。 I was bought a cellphone by my father last week. = A cellphone was bought for me by my father last week. 上周我父亲给我买了一部手机。 1. 肯定句: be＋及物动词的过去分词 2. 否定: be 后加 not 3.一般疑问句: 肯定回答： 否定回答: 4.特殊疑问句: Trees were not (weren’t ) planted last year. be提前 Were trees planted last year? Yes, they were. / No, they weren’t. Yes, 主语+be. No, 主语+be not ①特殊疑问词(不作主语)＋be＋主语＋done? ②特殊疑问词(作主语)＋be＋done? 常考的被动语态四大句型转换： The trees were planted last year. Language points 1. Television can enrich people’s lives and broaden their minds.电视能够丰富人们的生活，开阔人们的眼界。 【点拨】(1) enrich one’s life 丰富某人的生活 (2) broaden one’s mind 开阔某人的眼界 2. It was one of the greatest inventions in the 20th century.它是20世纪最伟大的发明之一。 【点拨】one of＋the＋形容词最高级＋可数名词复数，表示“最······之一”。 e.g. One of the most famous scientists comes from China.最著名的科学家之一来自中国。 3. In the past, pencils were sharpened by hand, but now pencils can be made sharp by using a small tool.过去，铅笔靠手工削，但是现在可以使用小工具把铅笔削尖。 【点拨】(1) 一般过去时的被动语态 were sharpened (2) 含情态动词的被动语态 can be made (3) in the past在过去 (4) by hand用手工 (5) sharp(adj.)＋-en变为sharpen(v.) 使锋利 【拓展】sharp的一词多义： (1) 锋利的、尖锐的(本义)：指物体边缘薄、能切割。 a sharp knife 一把锋利的刀 (2) 敏锐的、聪明的(引申义)：形容思维快、观察力强。 a sharp mind 敏锐的头脑 (3) 急剧的、猛烈的(引申义)：形容变化幅度大、速度快。 a sharp rise 急剧增长 4. I was woken up by my mom too early this morning.今早我很早就被妈妈叫醒了。 【点拨】(1) wake up 叫醒 (2) 一般过去时的被动语态 was woken up (wake的过去分词是woken) 5. Art Fry found that the glue could be used to keep the notes from falling and then created Post-it Notes.亚特·弗莱发现这种胶水可以用来防止便签脱落，随后便发明了便利贴。 【点拨】(1) 被动语态be used to do意为“被用来做······”。 (2) keep...from doing sth 阻止······做某事 6. Post-it Notes first appeared at the market and they became a great success.便利贴首次面世，并大获成功。 【点拨】(1) appear at the market 上市，面世 (2) a great success 巨大的成功 Exercise 一、用所给词的适当形式填空 1. The sun will ____________ (bright) the whole room. 2. Too much stress may ____________ (weak) your body. 3. The workers ____________ (broad) the street last month. 4. Please ____________ (sharp) your pencil before writing. 5. Modern tools ____________ (able) people to finish work faster. 6. Travelling can ____________ (rich) our life experience. brighten weaken broadened sharpen enable enrich 二、单项选择 1. Many kinds of vegetables ______ in the countryside every year. A. grow   B. are grown   C. grew   D. were grown 2. The ancient tower ______ by workers nearly 200 years ago. A. built   B. is built   C. was built  D. will be built 3. The problem ______ solved at once. We needn’t wait any longer. A. can be  B. can  C. can is   D. can been 4. A new community library ______ in our city next year. A. will build   B. is built   C. will be built  D. was built 5. Scientists ______ many new ways to protect the environment so far. A. find   B. found   C. have found   D. have been found B C A C C THANKS Lavf59.27.100 $