Lesson 29 课件2023-2024学年冀教版九年级英语全册

Lesson 29 DNA-The Story of You Oliva Do they look the same? twins They have the identical DNA. identical(adj) 相似的-identify (v.)确认;鉴别 脱氧核糖核酸 This is the shape of DNA. “DNA” is short for deoxyribonucleic acid. “DNA” is the blueprint of life. a blueprint is a drawing that shows how to put a house together 蓝图 general adj. 一般的;普通的 In general / Generally speaking 一般来说;通常 complex adj. 复杂的 more complex /most complex 比较级前可以用much, even, still, far, a bit, a little, a lot 等词加以修饰。 twin n. 双胞胎之一 repeat v. 重复; 复述;背诵 pattern n. 模式;形式 related adj. 有关的;相关的 be related to... 与.......相关 grandson n. 孙子;外孙 granddaughter n. 孙女;外孙女 instruction n. 指示;说明 New words Read and find Expcept for some twins, every living thing has its own DNA. Some health problems can b caused by problems in your DNA. Scientists can look for these problems and, sometimes, help you before you become sick. In the future, scientists might be able to change your DNA. There are copies of your DNA in every part of your body. You have your own unique DNA, but it repeats patterns from your parents' DNA. From your DNA, scientists can identify not only you, but also people who are related to you, and you have their DNA. DNA isfantasic Discuss! If you have a chance to control someone's DNA,what do you want to do with it? What is a blueprint? Which is more complex, building a living thing or building a house? Do some twins have the same DNA? It’s a drawing that shows how to put a house together with many different parts. Building a living thing is far more complex than building a house. Yes, they are. listen eo the text t and answer the questions: 4. Is it possible to change your DNA? 5. Whose DNA is related to yours? In the future, scientists might be able to change my DNA. My parents and grandparents. Practice Fill in each blank with the proper word. 1. This is the _(identify) hotel that we stayed in last year. 2. Your brothers are people _(relate) to you. 3. Do you know who is the _(own) of the house? 4. Your body uses thi