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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 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 What animals can you see in these pictures a wolf a dog Think: How did a wolf turn into a dog Lead-in a wild boar /b (r)/ a pig Think: How did a wild boar turn into a pig What animals can you see in these pictures a wild horse a modern horse Think: How did a wild horse turn into a modern horse What animals can you see in these pictures domesticate /d mest ke t/ v. 驯养 domestication /d mest ke n/ n. 驯化 Think: How did a wild horse turn into a modern horse While-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. Think: How did the wild animals become our friends and helpers Read and answer. P62 How many animals are there in the article What are they What animals were they before Three. Dogs, sheep and cows. Wolves → Dogs Wild sheep → Sheep Wild ox → Cows aurochs / r ks/ n. 欧洲野牛 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 with them. With every generation, people kept wolves with “friendly” genes. Over thousands of years, these pet wolves turned into dogs. Q1: How did wolves turn into dogs P62 When Where How Q2: How did wild sheep turn into modern sheep 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. How do sheep help people Meat. Wool. When Where How Cows People in West Asia started to domesticate aurochs — a kind of wild ox — 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. Q3: How did a wild ox turn into a modern ox How do cows help people Milk and meat. Good working animals. When Where How about 15,000 to 23,000 years ago somewhere in Asia with hunting / hunt around 13,000 years ago West Asia meat and wool sometime after 8000 BCE West Asia milk and meat good working animals ... ...
