外研版（2019）必修第二册Unit 6 Earth First Understanding ideas 阅读课件(共25张PPT)

(共25张PPT)
Unit 6 Earth first
Understanding ideas
by Ada
Understanding ideas
Tick the words that you would use to describe sharks. Add any more you can think of.
dangerous powerful
endangered interesting
man-eating terrifying
cute intelligent
huge
Understanding ideas
Now compare your choices with he class. Share what you know about sharks.
Now let’s watch a video and learn something more about sharks.
Understanding ideas
JAWS
JAWS《大白鲨》
1 Read the passage and find out how sharks are described in the film Jaws.
Sharks are described in the film as dangerous and bad animals that eat humans.
Understanding ideas
2 Choose the author’s purpose in writing the passage.
1 To criticise Peter Benchley’s misleading description of sharks in his book and advocate the protection of sharks.
2 To explain people’s misunderstanding of sharks and raise awareness of shark protection.
3 To inform people about sharks and recommend the film and the book to them.
Understanding ideas
3 Complete the chart showing how attitudes towards sharks have changed with words and expressions from the passage.
People have a nomal fear of sharks.
People have always been scared of sharks because they are considered
1 .
People are more frightened of sharks.
People who saw the film Jaws believed 2 .
.
Some people stopped
3 while others started to4 .
The number of large sharks fell quickly due to 5 .
.
as dangerous animals
sharks were bad animals that eat people
swimming in the sea
fish for sharks
fear of sharks and finning.
Understanding ideas
More people are against finning and wish to protect sharks
Peter Benchley admitted that his book
6 .
and fought7 them.
Experts have proved that
8 .
and they attack us by mistake.
Some people became interested in
9 and more are willing to10 .
People are more frightened of sharks.
People who saw the film Jaws believed 2 .
.
Some people stopped
3 while others started to4 .
The number of large sharks fell quickly due to 5 .
.
sharks were bad animals that eat people
swimming in the sea
fish for sharks
fear of sharks and finning.
was wrong about shark behaviours
to protect
sharks do not see people as food
understanding sharks
protect sharks from extinction
SHARKS:
DANGEROUS OR ENDANGERED
1 We see a woman swimming at night in a dark sea. Suddenly, she is pulled underwater. She surfaces, cries in fear, then disappears forever. This is the opening scene from the 1975 film Jaws, showing a shark attack. It tells the story of a great white shark that attacks and kills
swimmers. Jaws was a great success,
attracting huge audiences and winning
many awards. It strengthened people’s
long-held idea of the great white shark
as a dangerous animal.
SHARKS:
DANGEROUS OR ENDANGERED
2 People have always been scared of sharks, but Jaws made things worse. It made people frightened of sharks, especially of the great white shark. Many people who saw the film stopped swimming in the sea, afraid of the horrible creature from the film. Other people started fishing
for sharks, killing as many as they could.
At that time, nobody cared if sharks were
killed, or how many were killed. People
just wanted them killed.
SHARKS:
DANGEROUS OR ENDANGERED
3 After 1975, the number of large sharks around America fell quickly, and soon fell around the world. This was not only due to fear of sharks, but also finning. Finning is a type of fishing where sharks are caught and their fins cut off. The sharks are thrown back into the sea where
they die slowly and painfully. The fins are
used in shark fin soup. Finning kills
millions of sharks a year.
SHARKS:
DANGEROUS OR ENDANGERED
4 Finning would have an unexpected effect upon Peter Benchley, the man who wrote the book the film Jaws was based on. In 1980, Benchley was diving when he came across an awful sight. It was an area where fishermen were finning, and the sea floor was covered with dead sharks. Benchley saw sharks being killed and this caused a
deep change in him. He came to see people
as a danger to sharks, rather than the
other way round.
SHARKS:
DANGEROUS OR ENDANGERED
4 From that day on, he fought to protect sharks. He admitted that his book was wrong about sharks’ behaviour. “Sharks
don’t target humans,” he said. Experts have proved that sharks do not see people as food,
and they attack us by mistake.
Only around six people are killed
by sharks every year.
SHARKS:
DANGEROUS OR ENDANGERED
5 Fortunately, not everyone who watched the film Jaws became afraid of sharks -- some became interested in understanding them. Today, as we learn more about sharks, more people than ever want to
protect them from extinction.
Understanding ideas
1 How do you think Peter Benchley felt after diving in 1980
2 What other films or books do you know that feature wild animals Do they “paint” a good or bad picture of these animals Say how the animals are described.
Think share
Sharks
Dangerous ocean predators, 1 (see) by many as cold blooded killers, sharks have a 2 (fear) reputation. However, there is more to their story than meet the eye.
Sharks are a special category of fish that live in every ocean in the world,
3 (most) in warm waters. Some even live in rivers and lakes. Some live near the surface, some live in the deep water and some live on the ocean floor. Some sharks stay near or on coral reefs,4 others live in the open ocean.
seen
There are many species of sharks. More than 500 species are known and they vary 5 size from small sharks not much bigger than a person’s hand to the largest fish in the world, the whale shark, 6 can grow up to 50 feet or 15 meters long.
fearsome
mostly
while
in
which
Understanding ideas
Understanding ideas
Sharks
Many people are afraid of sharks, and think that sharks will attack any time they see you. For the most part, however, sharks do not attack humans. Out of hundreds of different species there are, only 4 shark species have7 (involve) in a significant number of attacks. Fewer than five people a year are killed by sharks in the whole world. In fact, many more sharks are killed by humans. 8 is estimated that about 100 million sharks are killed by people every year due to fishing. Because of this, many shark species are in danger of 9 (extinct)! Now people 10 (try) to protect sharks. They play a very special role in ocean ecosystem, keeping fish populations from growing too large and helping the entire food chain remain healthy. Without sharks, the entire ocean would suffer.
been involved
It
extinction
are trying
Language points
1. scare
v. 使(某人)惊恐；吓唬；n. 惊吓；恐慌
scared adj. 害怕的 --- scary adj. 可怕的；恐怖的
①It scares sb. to do sth. 做某事使人感到害怕
②scare... away/off 把......吓跑
③be scared to do sth. 害怕做某事
④be scared of/that... 害怕
Understanding ideas
Language points
Exercise
1. It scared me (think) I took a ship alone on the rough sea.
2. When we are getting angry or (scare), out bodies also go through many physical changes.
3. The researchers had to made a fire at the edge of the forest to scare wild animals at night.
4. The little girl are scared dogs for she was bitten.
to think
scared
away/off
of
Understanding ideas
Language points
2. target
v.把......作为目标；n. 目标；对象；靶子
①be targeted at 以......为目标
②meet/achieve/reach a target 完成/达到目标
③set a target 制定目标
④be on target 有望达到目标；进展顺利；正中目标
Understanding ideas
Language points
Exercise
1. Set (your) targets that you can reasonably hope to achieve.
2. The advert for energy drink is targeted (specific) at young people.
3. We were still right target for our deadline.
4. His job is (set) targets for limiting greenhouse gases.
yourself
specifically
on
to set
Understanding ideas
Language points
3. cut off
砍/切/剪掉；停止；中断；使...与外界隔绝
cut v./n. 切；割；修剪；割破；消减；切断
①cut down 砍到；减少；缩减
②cut in 插嘴；打断别人说话
③cut across 抄近路穿过
④cut up 切碎；剁碎
Understanding ideas
Language points
Exercise
1. She always focused on what her friend said and seldom cut .
2. Don’t cut the tree that gives you shade.
3. We can gain some time if we cut this field.
4. Busy with his project, he felt cut from the outside.
in
down
across
off
Understanding ideas
3. as 引导状语从句
①as 引导时间状语从句，强调动作同时发生，“随着...”
②as引导原因状语从句，表示“因为，由于”。
③as引导比较状语从句，表示“像......一样”。
④as引导让步状语从句，表示“尽管，虽然”。
Language points
⑤as引导方式状语从句，表示“按照，如同”。
Understanding ideas
Understanding ideas
Language points
Exercise
判断as引导的状语从句，写出每个as的含义。
1. Try as he might, he couldn’t open the door.
2. I can’t run as fast as I used to.
3. You’d better have a balanced diet as the doctor told you.
4. As it is fine, we shall go out for a walk.
5. As he grew older, he became less active.
虽然
像...一样
按照
因为
随着
Thank you for watching