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课件网) Unit 4 Our animal friends 主题范畴： 人与自然 主题群： 环境保护 子主题： 热爱与敬畏自然，与自然和谐共生 Key question Why are animals important to us tell stories about how animals help human beings. explain why animals are important to us. understand the relationship between humans and animals. describe how wild animals became our friends and helpers. Unit objectives 单元目标 I can: New words somewhere / s mwe (r)/ adv. 在某处；到某处 probably / pr b bli/ adv. 很可能；大概 source /s :s/ n. 来源；出处 sometime / s mta m/ adv. 在某时 extinct / k st kt/ adj. 已灭绝的；绝种的 effort / ef t/ n. 艰难的尝试；试图 Lead-in Do you know these animals Have you ever thought about how they became pets or farm animals Reading Focusing on culture Many farm animals and pets used to be wild animals. How did they become our friends and helpers Let’s find out what happened. Read the article about domestication (驯化)and find out how animals were domesticated. The story of domestication Long ago, dogs, sheep and cows used to be wild animals. How did they turn into pets and farm animals Let’s find out! Dogs The story of domestication started somewhere in Asia, about 15,000 to 23,000 years ago. Back then, people moved across the land. They hunted large animals and often left meat on the ground. This attracted wolves, and they probably began following the hunters. Some people started catching baby wolves. They trained these young wolves to hunt with them. With every generation, people kept wolves with “friendly” genes (基因). Over thousands of years, these pet wolves turned into dogs. Sheep Around 13,000 years ago, people in West Asia began to domesticate animals like sheep. Sheep are small and not very dangerous, and they move in big groups and follow their leader. This makes them easy to domesticate. They became an important source of meat. Later, the farmers also learnt how to make clothes from their wool. Cows People in West Asia started to domesticate aurochs (古代野牛)—a kind of wild ox (牛)—sometime after 8000 BCE. Aurochs are now extinct, but they used to live all over Europe and Asia. They provided people with milk and meat, and they were also good working animals. As with other animals, people chose to keep aurochs with “good” genes, and the animals slowly turned into the cows we see today. Over many thousands of years, pets and farm animals changed because of human efforts. The story of domestication still continues today. What is the main idea of the passage Task 1 It is about the domestication of dogs, sheep and cows. When and where did the domestication of dogs start Why were sheep easy to domesticate What did aurochs provide people with Scanning Task 2 Complete the table with the information from the article on page 62. The earliest domesticated animals Dogs Time: (1) _____ Place: (2) _____ They helped people (3) _____. Sheep Time: (4) _____ Place: (5) _____ They provided people with ... ...
