资源简介

(共21张PPT)
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 (6) ________________.
Cows Time: (7) _______________ Place: (8) ______________
They provided people with (9) ______________.
They were (10) ____________________.
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
(1) Many years ago, some wild animals, such as wolves, __________ began living closer to humans to get food.
(2) Thanks to the __________ of early farmers, many different animals were domesticated.
(3) Sheep were domesticated because they were a good __________ of meat.
(4) The farmer needed __________ to keep his horses in winter.
(5) Aurochs went __________ in the wild, and their domesticated relatives developed into the cows we see today.
probably
efforts
source
somewhere
extinct
Complete the sentences with the words below. Change the form if necessary.
Task 3
Why were dogs, sheep and cows domesticated first
(2) How do these domesticated animals benefit us today, and how would our lives be different without them
Think about the following questions and discuss them in your group.
Task 4
Possible answer: Dogs were domesticated first maybe because people left meat on the ground when they hunted. This attracted wolves, and some people started catching baby wolves and trained them to hunt. Sheep were easy to domesticate as they are small, not very dangerous, and move in big groups and follow their leader. Cows, like aurochs, could provide milk, meat and were good working animals, so people started to domesticate them.
(1) Why were dogs, sheep and cows domesticated first
(2) How do these domesticated animals benefit us today, and how would our lives be different without them
Possible answer: Today, dogs can be our pets. They can play with us and make us happy. They can also help the police do some work. Sheep give us meat to eat and wool to make clothes. Cows give us milk to drink and meat to eat too. Without dogs, we would miss having a lovely friend. Without sheep, we would have less meat and fewer clothes made from wool. Without cows, we would not have milk and some meat. Our lives would be very different and less convenient.
Review
domestication n. 驯化
domesticate v. 驯养
used to be/do sth. 过去曾经是/常常做某事
turn into (=change into/become) 变成
move across 横穿；横跨
leave v. (left, left) 留下
an important source of 一个……的重要来源
重点词汇和核心句式
a kind of (=a type/sort of) 一种
BCE 公元前(before common era)
extinct adj. 已灭绝的；绝种的
as with 正如；和……一样
choose to do sth. 选择做某事
because of 因为
effort n. 艰难的尝试；试图
continue v. (使)继续；(使)延续
Long ago, some wild animals were d__________ and became pets or farm-animals.
The hunter l____ some meat on the ground to attract the wild animals.
Aurochs, a k___ of wild ox, are now e_____.
People c____ to keep animals with “good” genes, and they slowly t_____ into the animals we see today.
Owing to human e_____, many wild animals have been protected well.
根据句意和首字母提示填空。
omesticated
eft
ind
xtinct
hose
urned
fforts
The river m_____ a____ the city, bringing water to the people here.
Sheep are an i________ s______ of meat and wool.
The story of animal domestication still c________ today.
The little boy fell into the river b________ his carelessness.
oves
cross
mportant
ource
ontinues
ecause of
Thank you!

展开更多......

收起↑