Unit5 Lesson 29课件- 2024-2025学年冀教版英语九年级全册

Lesson 29: DNA—The Story of You 1 Look at the picture. What can you find? The boy looks like his father. 2 The child’s DNA comes from his parents. Why do they look the same? 3 This is the shape of DNA. It’s magic. What do you know about DNA? 4 be related to与……相关 DNA is complex. It can help us identify people who are related to us. /ˈkɒmpleks/ adj. 复杂的 /aɪˈdentɪfaɪ/ v. 确认，鉴别 /rɪˈleɪtɪd/ adj. 有关的，相关的 They are their grandson and granddaughter. They are twins. In general, the twins look alike. /ˈgrænsʌn/ n. 孙子，外孙 /twɪn/ n. 双胞胎 /ˈdʒenərəl/ adj.一般而言，通常 /ˈgrændɔ:tə/ n 孙女，外孙女 repeat /rɪˈpi:t/ v. 　 重复;复述;背诵 Sorry, I couldn’t hear you. Could you please repeat what you said just now? pattern /ˈpætn/ n. 模式;形式 He dances to the pattern of the music. 他随着音乐的节奏跳舞。 blueprint /ˈblu:prɪnt/ n. 蓝图 When we build a building, we always follow the blueprint. instruction /ɪnˈstrʌkʃn/ n. 指示;说明 She follows the instructions to take her medicine. DNA blueprint /ˈblu:prɪnt / general /ˈdʒenərəl/ complex /ˈkɒmpleks/ twin /twɪn/ repeat /rɪˈpi:t/ pattern /ˈpætn/ identify /aɪˈdentɪfaɪ/ related /rɪˈleɪtɪd/ grandson /ˈgrænsʌn/ granddaughter /ˈgrændɔ:tə/ instruction /ɪnˈstrʌkʃn/ 脱氧核糖核酸 n. 蓝图 adj. 一般的；普遍的 adj. 复杂的 n. 双胞胎之一；孪生儿之一 v. 重复；复述；背诵 n. 模式；形式 v. 确认；鉴别 adj. 有关的；相关的 n. 孙子；外孙 n. 孙女；外孙女 n. 指示；说明 Words and Expressions Part I Blueprint Part Ⅱ DNA Let’s learn more about DNA. Skim(略读) the passage and divide it into different parts. Read Part 1 and complete the sentences. Blueprint _________, a blueprint is a drawing that shows how to put a house together with many different parts. Building a living thing is ________ complex than building a house. It takes millions of years for nature to change the DNA in living things to _____ them ___ the world they live in. In general far more But building a living thing is far more complex than building a house. 但创造一个生物比盖房子要复杂得多。 far用来修饰形容词和副词的比较级，这样的词语还有much, even, a little, a bit, a lot, rather等。 The room is a bit larger than that one. 这个房间比那个稍大一点。 He works still harder than ever. 他比以往更加努力学习了。 Read Part 1 and complete the sentences. Blueprint _________, a blueprint is a drawing that shows how to put a house together with many different parts. Building a living thing is ________ complex than building a house. It takes millions of years for nature to change the DNA in living things to _____ them ___ the world they live in. In general far more make fit Read Part 2 and complete the sentences. DNA is fantastic ___________ some twins, every living thing has its own unique DAN. Some health problems can ___________ by problems in your DNA. There are copies of your DNA is every _________ your body. 4. You have your own _______ DNA, but it repeats patterns from your parents’ DNA. (From your DNA, scientists can identify ________ you, ________ people who are related to you.) 5. _______ you have a ___________ or _______________, he or she will have your DNA. Except for Except for some twins, every living thing has its own unique DNA. 除了同卵双胞胎之外，每个生物都有自己独特的DNA。 except for意思是“除……之外；要不是由于”，它要求排除的是不同类的。 The city is good except for the weather. 除天气外，这座城市还不错。 Except for one old lady, the bus was empty. 除一位老太太乘坐外，公共汽车空无一人。 Read Part 2 and complete the sentences. DNA is fantastic ___________ some twins, every living thing has its own unique DAN. Some health problems can ___________ by problems in your DNA. There are copies of your DNA is every _________ your body. 4. You have your own _______ DNA, but it repeats patterns from your parents’ DNA. (From your DNA, scientists can identify ________ you, ________ people who are related to you.) 5. _______ you have a ___________ or _______________, he or she will have your DNA. Except for be caused part of unique not only but also When grandson granddaughter 1. What is a blueprint? 2. Which is more complex, building a living thing or building a house? (Why?) 3. Do some twins have the same DNA? 4. Is it possible to change your DNA? 5. Whose DNA is related to yours? 6. What is one of the most amazing things on the earth? 1. What is a blueprint? 1. A blueprint is a drawing that shows how to put a house together with many different parts. 2. Which is more complex, building a living thing or building a house? (Why?) 2. Building a living thing is far more complex than building a house. 3. Do some twins have the same DNA? 3. Yes, they do. Some twins have the same DNA. 4. Is it possible to change your DNA? 4. Yes, it is. In the future, scientists might be able to change our DNA. 5. Whose DNA is related to yours? 5. People who are related to me. For example, my parents and grandparents. From your DNA, scientists can identify not only you ,but also people who are related to you. 从你的DNA中，科学家们不但能够辨认出你，而且能够辨认出和你有血缘关系的人。 be relate to/with表示“与……有关，使互相关联”。 He is related to my family. 他与我的家庭有关系。 6. What is one of the most amazing things on the earth? 6. Your DNA has billions of instructions that explain why you are the way you are. Find the following phrases in the passage and translate them. 1. in general ________________ 2. except for _____________ 3. be caused by ______________  4. not only… but also…____________________ 5. be related to ______________  6. billions of ____________  除……之外 与……相关 由……引起 数十亿计的 一般而言，通常 不但……而且…… Fill in the blanks with the phrases in the box. in general except for not only…but also related to even if the same…as Your homework is quite good_________ a few spelling mistakes. 2. ________ the young ________ the old like pop music. 3. Kate’s hair is _________colour ___ her sister’s. 4. _________, women live longer than men. 5. ________many difficulties remain, we can overcome them. 6. Is wealth __________happiness? except for Not only but also the same as In general Even if related to 2 P75 Complete the passage with the sentences in the box. Changing DNA Do you know DNA can be changed? Have you ever seen a pig with a dog’s body? Of course not! Pigs and dogs can’t have babies together. ____ But now, scientists can do it. Scientists can take DNA from one kind of animal and put it into another kind of animal. They can design new plants by combining the DNA of other plants. ____ Some scientists are worried. They say we need to know more about DNA before we start changing it. ____ But what if the plants are bad for humans, too? A A. Their DNA can’t combine. B. We can make plants that are bad for pests. C. They can even combine the DNA of a plant and an animal. C B 29 Is it a good idea to change the DNA of the food we eat? Some people say doing this makes our food better. Others think it’s too dangerous. Search the Internet for information and write down your ideas. 30 Ⅰ. 根据汉语意思完成句子， 每空一词： 轻工业和农业密切相关。 Light industry is closely_________ _______ agriculture. 2. 除了窗子小外, 这座房子很漂亮。 The house is beautiful ______ _____ the small windows. 3. 你的头发和皮肤有同样的DNA。 Your hair has ______ _______ _______ _____ your skin. 4. 她不但会唱歌，而且会跳舞。 She can _____ ______ sing ______ ________ dance. related to except for the same DNA as not only but also Ⅱ.单项选择 — Lisa， how is your cousin? — He is _________ now. Thank you. A. more healthier B. much healthier C. very healthier D. healthiest 2. There are ________ stars in the sky. A. billion B. billion of C. billions D. billions of 3. Ms. Wang is very strict with us. She always asks us to do everything according to her _______. A. attention B. information C. direction D. instruction null 2014 Other 46053.47 $$