Lesson28TheStudyofLivingThings.ppt

1、,Lesson 28: The Study of Living Things,monarch butterfly,Talk about the picture! What can you see in the picture? What do you think of them?,Monarch butterfly,美洲王蝶是栖息在北美地区的一种色彩斑斓、身体硕大的蝴蝶。每年10月底至来年3月初，上亿只美洲王蝶从美国东北部和加拿大南部飞越4,500多千米来到温暖的墨西哥中部林区越冬和繁衍。,They cover some trees almost completely in the same

2、small piece of forest in Mexico.,The females lay eggs on only one plant: milkweed.,Just as many birds migrate, they travel up to 4000 kilometres every year.,Read carefully and answer the questions: 1.Where does Dr. Chip Taylor teach? 2.What does he study? 3.Where do the butterflies spend the winter?

3、 Where do they lay eggs? 4.What does Dr. Taylor worry a lot? 5.What do they do to protect butterflies ? 6.What is both puzzling and interesting for many scientists?,Read and answer,1.Where does Dr. Chip Taylor teach? 2.What does he study?,He teaches at a university in the United States.,He studies o

4、ne kind of North America butterfly.,Language notes:,1. He studies one kind of North American butterfly . just like a migrating bird ,this butterly travels about 4000 kilometres south in fall.,travel south “向南迁徙” south adv. “向南” = travel to the south south n. “南方”,migrate v. immigrant n.,in fall = in

5、( the) fall = in (the )autumn 在秋天,Language notes:,2. Fascinating facts about the butterfly have been drawing Dr. Taylors attention.,draw/call ones attention “引起某人的注意” pay attention to “注意,重视, 倾听”,The fact draws everyones attention. What he did today drew my attention. You must pay attention to your

6、handwriting.,Dr. Taylors 名词所有格形式,3.Where do the butterflies spend the winter? Where do they lay eggs? 4.What does Dr. Taylor worry a lot? 5. What do they do to protect butterflies ?,In Mexico. They lay eggs on only one plant: milkweed.,In Mexico, people cut down the trees. And in the United States a

7、nd Canada, farmers use chemicals that kill milkweed.,Mexico has begun to protect parts of the forest .The United States and Canada have encouraged farmers to use less chemicals.,3. In Mexico, the butterflies always return to the same small piece of forest, which is only 20 kilometres wide. Here, as

8、many as 230 million butterflies spend the winter.,计量的表示方法: 数词 + meterskilometers+long/wide/tall/deep/,Our classroom is about 6 metres wide. The bridge is about 500 metres long. The river is about 10 metres deep.,as many as “多达 ”,There are as many as 7000 students in our school.,230 million 数词+ milli

9、on 百万 millions of 数百万,as.as 意为“和.一样 Zhaxi is as tall as danny.,Language notes:,4. They can cover some trees almost completely.,complete adj. completely adv.,我们必须今天彻底完成这项工作。,We must finish the work completely today.,5. The butterflies that return to the south are the great-great grandchildren of the

10、butterflies that left for the north.,leave (left left) for “离开 前往”,They left for Shanghai yesterday. My father is leaving Beijing for Shanghai tomorrow.,Language notes:,6. When they began to travel north in spring, the females lay eggs. They lay eggs on only one plants: milkweed.,lie lay lain lying

11、“躺,平躺; 位于” lay laid laid laying “产卵; 放置” lay eggs lie lied lied lying “撒谎”,7. But in Mexico, people cut down the trees that the butterflies need to rest on because they want more land for farming.,cut down “砍倒, 消减 ”,这些树很好,请不要砍倒它们。,The trees are very good. Please dont cut them down.,female male,Langu

12、age notes:,9. This worries Dr Taylor a lot.,a lot 很，非常 。作副词， (相当于very much)常修饰动 词和adj.或adv.,We have a lot to do. He likes apples a lot/very much. He works a lot at home. She is a lot cleverer than I am.,注意： a lot of = lots of + 可数名词/不可数名词 常用在肯定句中 many + 可数名词 much + 不可数名词,用于否定句,疑问句和肯定句中,worry v. 使着急,

13、使担心 worry about 担心,The news worried him a lot. we all worry about him.,Language notes:,10. The United States and Canada have encouraged farmers to use less chemicals.,encourage sb. to do sth. “鼓励某人做某事”,我们的老师经常鼓励我们互相学习。,Our teacher often encourages us to learn from each other.,11. If they are even a

14、few days late, they will freeze.,a few + 可数名词复数 一些 a little + 不可数名词 一些 few+可数名词复数 几乎没有 little +不可数名词 几乎没有 昨天有一些同学没有来上课 A few students didnt come to our class yesterday. 瓶子里有一些苹果汁 There is a little apple juice in the bottle.,freeze froze frozen,6.What is both puzzling and interesting for many scienti

15、sts?,Scientists still dont understand how the butterflies know when to fly south and how do all the great-great grandchildren find the same forest in Mexico every year.,Language notes:,12. This is both puzzling and interesting for many scientists.,She is both clever and beautiful. Both he and I are

16、teachers. Both Li Ping and her mother take exercise every morning.,连词bothand的意思是“和都，既也”，它可以连接句中句子成分相同的词语，如果用它连接主语时，谓语动词要用复数形式。,Think about it! 1. Would you like to be a biologist when you grow up,? Why or why not? 2. What mysteris of nature do you know about?,Fill in each blank with the proper word

17、from the brackets: I encouraged her _(work) hard and to try for the examination. Monarch _(butterfly) are very beautiful. Both this dictionary and those books _(belong) to me. My friend doesnt know what happened just now. He looks _(puzzle). Thank goodness! Weve finished the hard work _(complete). T

18、he butterflies _(freeze) already. The boy put down the football and _(lie) on the grass to have a rest. The hen _(lay) an egg yesterday. My father is a lot _(tall) than me.,to work,belong,puzzled,completely,butterflies,have frozen,lay,laid,taller,汉译英： 当这位生物学家穿过森林时,这些奇怪的花引起了他的注意。 The strange flowers _ the _ _ when he was walking through the forest. 2. 越