冀教九年级英语Unit 5 Look into Science Lesson 29 DNAThe Story of You 课件.pptVIP

Lesson 29;;; DNA blueprint general complex twin repeat pattern identify related grandson granddaughter instruction;Do you and the students near you look the same? What is the same? ;Think about it! What do you know about DNA? 2. What can scientists do with DNA?;This is the shape of DNA. Do you think it’s magic?;The two girls are twins. Maybe they have the identical DNA. [identical（adj) ---identify (v.)];Why?;Listening Task;While-reading;What is a blueprint? Which is more complex, building a living thing or building a house? Do some twins have the same DNA? ;4. Is it possible to change your DNA? 5. Whose DNA is related to yours?; 1. But building a living thing is far more complex than building a house. ;2. own 的用法 1）adj. 自己的 （用在所有格后，加强语气） Now ask the same questions about your own teachers. She makes all her own clothes. 2) vt. 有，拥有 Who owns the bike?;3. except for 除……以外，只是 He is a good man except for hot temper. Your article is quite good except for several spelling mistakes. ;4. not only ... but also ... 不但……而且…… 连接两个相同的成分，也可以连接两个分句。当接两个主语时，谓语动词和后面主语保持一致。 e.g. He likes not only English but also math. Not only you but also I am a teacher. 5. relate to 涉及；有关 e.g. The story related to the Second World War. I have a book relating to the Autumn Harvest Uprising. ;Post-reading;Writing;Practice;5. You have your own DNA, but it repeats the patterns from your __________(parent) DNA. 6. Some health problems come from your family’s DNA. _________(science) can look for these problems in your DNA.;根据汉语意思完成句子，每空一词： 1. 我们用蓝图建造房子。 We _______ a blueprint ______ _______ a house. 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。