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(共20張PPT)
Revealing Nature
Biodiversity
Activity 8
1. What species are mentioned and what is special about them
Two species are mentioned:the blue whale and the water bear.
The blue whale is the largest animal species on Earth, which can grow up to almost 30 metres in length and weigh over 130,000 kilos. The water bear is probably the toughest species, which can survive temperatures from 150 C to a below freezing -272 C.
2. What other unusual life forms do you know of
words & expressions
U5
被宣告滅絕
歸咎于
處于隔離\隔絕狀態(tài)
為...而競(jìng)爭(zhēng)
特別地
blame
blame their extinction ____ humans
= blame humans on their extinction
You are _____ blame.
Why do I always get the blame for everything that goes wrong
Museums must compete __45__ people's spare time and money with other amusement.
(2020山東高考)
words & expressions
U5
對(duì)...有害
擊退所有的病菌
由...構(gòu)成
說(shuō)到這個(gè)
是...的家園
對(duì)比之下
達(dá)到
在長(zhǎng)度上
體重超過(guò)
等待被探索
biodiversity
species
bacteria
germ
digestion
immune system
organic matter
Activity 9
is home to
are native to
scientific
habitats
ecosystem
appearance
primitive
ancestor
Complete the paragraphs with the correct form of the words and expressions in the box.
words & expressions
U5
be renowned for
be native to
carry out
serve as habitats (inhabitant n.)
there is evidence that
因...而聞名
原產(chǎn)于
實(shí)施，執(zhí)行
充當(dāng)，擔(dān)當(dāng)棲息地
有證據(jù)表明
The Secret Language of Plants
Unit 5 Revealing nature Developing ideas
Activity 1
Now talk about what else you think the plants can do and give examples.
Look at the pictures and tick what plants can do.
attack
breathe
eat
sleep
move
speak
steal
think
√
√
√
√
√
Activity 2
What's the genre of the passage
Create a mind-map of the passage
They may communicate with each other by using chemicals, sound and “wood wide web”.
What's the main point (topic) of the passage
It appears that plants can communicate after all.
1 Talking plants have long been a thing of myths and legends. Many cultures have stories of talking trees that give advice ________________ （=besides）warnings to people. Alexander the Great and Marco Polo were said to____________ (visit) such a tree in India. And in some modern stories, such as the movie Avatar, trees can communicate with animals and people.
2 _________ us long believing that talking plants are fantasy, new research has revealed ( ) something amazing:_______________ (似乎) plants can communicate after all ( ).
as well as
have visited
With
揭示
it appears that
終究
會(huì)說(shuō)話的植物一直是神話傳說(shuō)中的一大元素
長(zhǎng)期相信 long adv.
3 It has been known for some time ______ plants use chemicals to communicate with each other. This happens when a plant, say ( ) a bean plant, gets __________(attack) by insects. The plant releases tiny amounts of chemicals ( ) from the leaves that are ____________(eat). This is like a warning, or a call for help:“I'm ______________ (attack)!”When another bean plant _________(察覺(jué)；偵查）the chemicals from its injured neighbour, it starts to release its own, different chemicals. Some of these chemicals __________________ (趕走昆蟲(chóng)). Others attract insects — the wasps! The wasps kill the insects ________ are eating the bean plants. Scientists hope to learn more about this plant warning system, so that we can use it to grow crops without pesticides.( )
that
比方說(shuō)
attacked
釋放微量的化學(xué)物質(zhì)
being eaten
being attacked
detects
drive insects away
that
殺蟲(chóng)劑
4 More ____________ (surprise), plants also use sound to communicate. People can't hear these sounds, but plants are making them. Some plants make noises with their roots. Corn and chilli plants do this. They also“l(fā)isten”to the noises from other plants. A chilli plant can tell ( ) if a neighbouring plant is helpful, or unfriendly. Some trees make clicking noises when there is not enough water, _____________ (indicate) drought is arriving.
surprisingly
知道，判斷
indicating
5 Most surprisingly of all, plants have an amazing system of communication _________ can link nearly every plant in a forest. Scientists call this system the“wood wide web” ( ) . It is in some ways similar to the Internet we use. ________ (表對(duì)比）the Internet is a worldwide network of computers ___________ (link) by cables and satellites, the wood wide web is linked underground by fungi. This fungal network links the roots of different plants ____ each other.
that
木聯(lián)網(wǎng)
While
linked
to
Using
with
自己的網(wǎng)絡(luò)犯罪版本
from
有毒物質(zhì)
prevent
6 Scientists are learning more every day about the secret ways ___________ plants talk to each other. Who knows Maybe one day we will know enough about plant communication ________ (be) able to“talk”with them ___________(us).
in which
to be
ourselves
2. from the leaves
3. release its own, different chemicals
4. with their roots
5. tell if a neighbouring plant is helpful, or unfriendly
6. clicking noises when there is not enough water, indicating drought is arriving.
7. the roots of different plants to each other
8. share information and even food
9. steal food from each other, or spread poisons
communicate with each other
Think & Share
1 What figure of speech is being used when the plants are described as calling for help What is its function
2 What does “wood wide web” mean
1. Personification. It can make descriptions more vivid.
2. “wood wide web” refers to an amazing system of communication that can link nearly every plant in a forest. It is linked underground by fungi and this fungal network links the roots of different plants to each other. Using the wood wide web, plants can share information and even food with each other.
Think & Share
3 What do you think are the benefits of studying plant communication
4 What secrets do the two reading passages in this unit reveal and what do they have in common
3. It will help us know more about the world of plants and then get a better understanding of the secret of nature and encourage us to explore more about the mysterious nature. What’s more, it will teach us an important lesson, that is, human should live in harmony with mother nature. And it is our responsibility to fulfill the mission.
4. Passage 1 reveals the secret of evolution and Passage 2 reveals the secret of communication between plants. They all reflect that there are numerous secrets in nature that are waiting to be explored.
Activity 4
1 Read the passage again and talk about how plants communicate.
2 Think about and discuss the following ways of communication in the animal world. What other ways can you think of
Bees “dance” to signal to other bees that they have found food.
Ants communicate with each other through touch, chemical signals, moving their bodies and even using their legs to make sounds.
3 Organise your ideas following the steps below.
Begin with what living things you have chosen to talk about.
Explain how they communicate and give examples.
Conclude by explaining what we have learnt from their behaviour.
4 Give a talk to the class about communication between living things.
Work in groups.
Now talk about how well you contributed to your group discussion and help each other to make improvements.

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