(
课件网) Unit 5 Look into Science Lesson 29 1. Do you look the same with your sister or brother Your DNA comes from your parents. 3. Why 2. Do you look like your mother Free Talk What's DNA DNA is the blueprint of life. How tall are you What colour are your eyes What size are your feet All these things are strongly influenced by your DNA before you are born! This is the shape of DNA. Do you think it’s magic Let's learn a new lesson and find out how fantastic DNA is! 1. To understand the meaning and usage of the new words and expressions. 2. To know more about DNA. 3. To learn more about human beings and enjoy science. 学习目标 DNA [ di en e ] blueprint [ blu pr nt] general [ d enr l] complex [ k mpleks] twin [tw n] repeat [r pi t] 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 v. 重复;复述;背诵 New words and expressions. 新课讲授 pattern [ p tn] identify [a dent fa ] related [r le t d] grandson [ ɡr ns n] granddaughter [ ɡr nd t (r)] instruction [ n str k n] 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 1. for some twins, every living thing has its own unique DNA. 2.Some problems can be caused by problems in your DNA. 3.Your finger has the DNA as your hair. 4.From your DNA, can identify not only you, but also people who are related to you. 5. DNA is one of the amazing things on the earth! health scientists most same Listen to the text and fill in the blanks. Except Listening ① Read the lesson and answer the questions. 1. What is a blueprint 2. Which is more complex, building a living thing or building a house 3. Do some twins have the same DNA 4. Is it possible to change your DNA 5. Whose DNA is related to yours A blueprint is a drawing that shows how to put a house together with many different parts. Building a living thing. Yes, they do. Yes. In the future, scientists might be able to change our DNA. People who are related to me. For example, my parents and grandparents. Reading 1. In general, a blueprint is a drawing that shows how to put a house together with many different parts. 一般而言,蓝图就是一幅图纸, 它显示一座房子的构造。 in general = generally speaking 意思是“一般而言; 通常” eg：In general/Generally speaking, women cry more easily than men. 一般而言, 女人比男人容易哭。 Language Points 2. 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 [拓展] 这样的词语还有much, still, even, a little, a bit, a lot, rather等。 eg：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。 Matters are a lot better than ever before. 情况远远比以往好。 Lesson One is much easier than Lesson Two. 第一课比第二课容易得多。 Tom looks even younger than before. 汤姆看上去甚至比以前还年轻。 This train runs much faster than that one. 这辆火车比那辆快得多。 3. Except for some twins, every living ... ...
