外研版（2019）选择性必修第一册Unit 5 Revealing Nature Developing ideas 课件(共23张PPT)

(共23张PPT)
Period 3 Developing ideas
In Avatar, trees can communicate with animals and people.
What else do you think plants can do
attack
breathe
eat
sleep
move
speak
steal
think
What can these plants do
flytrap
mimosa
pea
[ fla tr p]
捕蝇草
[m mo z ]
含羞草
豌豆
It can catch insects.
It can shut its leaves when touched.
It can sow its own seeds.
Pre-reading
The Secret Language of Plants
Modern research is showing that plants can___________________ each other.
communicate with
Chemicals
Sound
WWW
Maybe one day we will be able to “_______” with plants .
talk
Para 1~2
Para 3
Para 4
Para 5
Para 6
While-reading: Read for structure
Modern research is showing that plants can ___________________________
Using chemicals
* The plant releases chemicals
_____________________
that are being eaten.
* When another plant detects the chemicals, it starts to
_____________
Maybe one day we will be able to “talk”with plants.
communicate with each other
from the leaves
release its own, different chemicals
Using sound
* Some plants make noises _____________________
* A chilli plant can
__________________
* Some trees make
_____________
with their roots
tell if a neighbouring palnt is helpful, or unfriendly
clicking noises when there is not enough water, indicating drought's arriving
Using the wood wide web
* This fungal network links
___________________
* Plants can ______________
___________with each other
* Plants can_______________
________________________ to attack other plants
the roots of different plants to each other
share information
steal food from each other, or spread poisons
While-reading: Read for details
and even food
Short for _________________ ____________________
System for ______________among humans ______________ among plants
Link every person on Earth every _______ in a forest
Linked by ___________ and ___________ underground _______which links the _______ of different plants to each other
Use it to share _____________ and _______with each other
Cybercrime cheat someone out of his______ spread computer virus to attack others’ ________ steal ______ from each other
spread _________ to ______
other plants
communication
communication
plant
cables
satellites
fungi
roots
World Wide Web
Wood Wide Web
communicate
entertain
shop
information
food
computers
money
food
poisons
attack
Personification means giving human characteristics to something that is not human. By using human characteristics to describe an object, animal or even a place, personification can make descriptions more vivid.
This is like a warning, or a call for help:“I’m being attacked”.
What figure of speech is being used when the plants are described as calling for help What is its function
Can you find more words or phrases in paragraph 3-5 using personification
Para. 3
call for help
drive insects away
Para. 4
other plants listen…
A chilli plant can tell…
Para. 5
Plants can share information and…
Plants can steal food from each other or spread poisons to attack other plants.
1.Birds on the tree are singing a beautiful song.
2. The frogs are giving a concert-mixed chord.
3. Anger choked my words.
4. A good idea suddenly struck me.
5. Fear seized/swallowed him.
不仅植物可以用拟人的方式来描写，还可以把动物，
含蓄的概念等当作人来描写
Practice. Can you translate the sentences by using personification
1. 风吹过来，花儿在风中跳起了舞蹈。
2. 大火吞没了整个森林。（swallow vt.吞没）
3. 岁月不等人。
4.黄河咆哮着，仿佛在诉说着我们民族的发展史。（roar vi. 咆哮 ）
5.春姑娘笑着向小草走来，为小草添上绿衣裳。（ add sth. to sth. 为...增加...）
The wind blows and the flowers dance in the wind.
The big fire swallowed the entire forest.
Time and tide wait for no man.
The Yellow River roars as if it is telling the development history of our nation.
Spring girl came to the grass with a smile, adding green clothes to the grass.
1. What do you think are the benefits of studying plant communication
Think Share
Scientists hope to learn more about this plant warning system, so that we can use it to grow crops without pesticides. 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.
2. What discoveries are described in the two reading passages in this
unit and what do their meanings have in common
Revealing
nature
A Journey
of Discovery
The Secret
Language of Plants
reveals the discovery of evolution
the discovery of communication between plants.
They all reflect that there are numerous secrets in nature that remain to be explored.
Students’activity: make an interview
Four students in a group: one is a scientist ,Doctor Li, who have found the secret language of plants, the other three are the reporters from China Daily. They are talking about his new discovery.
Show time
Scientists are learning the secret ways in which plants “talk” to each other. It has been known for some time that plants use chemicals 1______________ (communicate) with each other. When 2________ (attack) by insects, the plant releases chemicals from the leaves that 3______________ (eat). This is like 4___ warning. When another plant detects the chemicals, it starts to release 5___ (it) own, different chemicals. Some chemicals drive insects away.
6____________ (surprising), plants also use sound to communicate. Some plants make noises with their roots. Some trees make clicking noises when there is not enough water, 7__________ (indicate) drought is arriving.
Most surprisingly of all, plants have an 8________ (amaze) system of communication that can link nearly every plant in a forest. It is called “ wood wide web”, 9______ is in some ways similar to the Internet we use. Using the wood wide web, plants can share information and even food 10_____ each other.
Surprisingly
indicating
amazing
which
with
to communicate
attacked
are being eaten
a
its
Complete the summary by filling correct words or correct forms of the given words.
Language points
重点短语
1．Many cultures have stories of talking trees that give advice ____________(也；还；除……之外) warnings to people.
2．New research has revealed something amazing: it appears that plants can communicate ____________(毕竟；终究)．
3．And in some modern stories, such as the film Avatar, trees can __________________(与……交流) animals and people.
4．The plant releases __________________(微量的) chemicals from the leaves that are being eaten.
5．Some of these chemicals ______ insects ______(把……赶走)．　
6．It ______ in some ways ____________(和……相似) the Internet we use.
as well as
after all
communicate with
tiny amounts of
drive
away
is
similar to
重点句型·呈现
根据课文语境及汉语提示补全句子
1．with复合结构
______________________________________________________(我们一直认为会说话的植物只存在于幻想之中), new research has revealed something amazing: it appears that plants can communicate after all.
With us long believing that talking plants are fantasy
2．so that引导目的状语从句
Scientists hope to learn more about this plant warning system, ______________________________________________________(这样我们就可以利用其种植农作物，而不使用农药)．
3．现在分词短语作伴随状语
Some trees make clicking noises when there is not enough water, ______________________________(以示干旱就要来了)．　
so that we can use it to grow crops without pesticides
indicating drought is arriving
1. Alexander the Great and Marco Polo were said to have visited such a tree in India. And in some modern stories, such as the film Avatar, trees can communicate with animals and people.
【例句】
据说 Darwin是《物种起源》一书的作者。
Darwin is said to be the writer of the book On the Origin of Species.
=It is said that Darwin is the writer of the book On the Origin of Species.
=People say (that) Darwin is the writer of the book On the Origin of Species.
sb be said to do sth结构的含义和用法：
sb be said to do sth = It is said that sb do sth = people say (that) sb do sth“据说某人做了某事”。
Important sentences
1)据说他是一位有名的作家。
2)据说那辆车是他偷来的。
Important sentences
It is said that he is a famous writer.
= He is said to be a famous writer.
It is said that he stole that car.
= He is said to have stolen that car.
2.　way后面跟定语从句
(教材P57)　Scientists are learning more every day about the secret ways in which plants talk to each other.
科学家们每天都在了解更多关于植物相互交流的秘密方式。
句式分析：本句是一个复合句，in which引导的定语从句修饰先行词ways。
[例]　I liked the open，honest way in which the man talked to me.
我喜欢那个人和我坦率、诚恳的谈话方式。
(1)way后面的定语从句还可以用that引导，或不用关系词。
(2)way作先行词，如果关系词在从句中作主语、宾语，只能用that或which，作宾语时，that及which均可省略；作状语时，关系词用that或in which，并且还可省略。
Important sentences
22
that/which
that/in which
detect / detective
detect v 发觉；察觉；探测
detective n 侦探
1）一位知名侦探已发现了他的秘密。
2）她发现她弟弟正在阳台上抽烟。
A well-known detective has detected his secret.
She detected her little brother smoking in the balcony.
Important words