冀教版九年级英语Lesson29DNA—TheStoryofYou.ppt

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1、Zhang Liangying looks like her mother. the two children are twins, They have same DNA. Lesson 29: DNAThe Story of You北营中学北营中学 马小维马小维 DNA blueprint general complex twin repeat pattern identify related grandson granddaughter instruction预习检测：预习检测：英汉互译英汉互译1.一般而言一般而言 _2. except for _3. Not onlybut also _

2、4. 与与有关有关 _5. 即使，纵然即使，纵然 _6. the same as _in generaleven if除除之外之外不仅不仅而且而且be related to与与相同相同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 DN

3、A ?5. Whose DNA is related to yours ?Where does your DNA come from? Your parents. Is your DNA in every part of your body? Yes, it is.Reading Task 1. But building a living thing is far more complex than building a house. Language points 比较级前可以用比较级前可以用much, even, still, far, a bit, a little, a lot 等词加

4、以修饰等词加以修饰。这个单元比那个单元容易得多这个单元比那个单元容易得多。This unit is _ _ _ that one. 合作探究合作探究议一议议一议：much easier than2. except for 除除以外，只是以外，只是 Your article is quite good except for several spelling mistakes. 辨析：辨析：except 与与 except for （1 1）except except 表示表示“除去，不包括除去，不包括”强调所排除的强调所排除的不包括在内，一般表示同类之间的关系。不包括在内，一般表示同类之间的关系

5、。（2 2）except forexcept for用于表示对主要部分的肯定和对用于表示对主要部分的肯定和对局部的否定，表示整体很好，除了有一些瑕疵。局部的否定，表示整体很好，除了有一些瑕疵。 知识运用：知识运用：(1).He is a good man, _ his bad temper(脾气脾气)(2).Everyone is here _ Danny, he is ill in the hospitalexcept forexcept3. not only . but also . 不但不但而且而且 连接两个相同的成分，也可以连接两个分句。当接两个连接两个相同的成分，也可以连接两个分句。

6、当接两个主语时，谓语动词遵循就近原则。即与靠近的主语的单主语时，谓语动词遵循就近原则。即与靠近的主语的单复数保持一致。复数保持一致。 e.g. He likes not only English but also math. Not only you but also I am a teacher. 讨论：讨论：1.不仅你而且他也必须离开不仅你而且他也必须离开 _ _ you _ _ he_ _ leave. 2._ _ Tom _ _Mary _ (说说) English. Not onlybut alsohas toNot onlybut alsospeaks4. be related t

7、o 与与相关相关 e.g. Is wealth（财富（财富 ）related to happiness?知识运用知识运用： the two boys _ _ _ the car accident.5. one of +形容词最高级形容词最高级+可数名词复数可数名词复数+ 最最之一之一 e.g. Its one of the most amazing things on the earth.活学活用：活学活用： 他是我们班最高的男孩之一。他是我们班最高的男孩之一。 He is_ _ _ _ _ in our class. are related toone of the tallest boys

8、 Lets do itexceptbesidesexcept fornot onlybut alsoknows达标测评达标测评根据汉语提示完成句子根据汉语提示完成句子1.1.大体上讲，人们都不喜欢被捉弄。大体上讲，人们都不喜欢被捉弄。 _ _，people donpeople dont like to be made fun of.t like to be made fun of.2.2.心脏病的发作可能与他去年的车祸有关。心脏病的发作可能与他去年的车祸有关。 The heart attack could The heart attack could _ _ _ his car crash h

9、is car crash last year.last year.3.3.这道物理题比那道数学题要复杂的多。这道物理题比那道数学题要复杂的多。 The physics problem is The physics problem is _ _ _ than that than that math problem.math problem.4.4.我有我自己独特的我有我自己独特的DNADNA吗？吗？ Do I have Do I have _ _ _ DNA? DNA?5.5.她是我们学校最受欢迎的老师之一她是我们学校最受欢迎的老师之一 。 She is She is _ _ _ _ _ _in our school.in our school.1. Write a passage about DNA, try to tell what it is, where it is from, what things you show your parents DNA?2. Preview Lesson 30.