(共17张PPT)
外研选择性必修
第一册
Unit 5
Period 2
Grammar
1
2
To know the usage of past perfect tense
To use past perfect tense correctly
目标一：To know the usage of past perfect tense
Activity 1: Look at the sentences from the reading passage and answer the question.
a Darwin suspected that the finches had evolved from a common ancestor,...
b Many people refused to believe that living things, including humans, had evolved from lower forms of life.
1 In sentence (a), which action happened first, “suspected” or “evolved from a common ancestor”
2 In sentence (b), which action happened first, “refused to believe” or “evolved from lower forms of life”
3 What does the structure had done indicate
In sentence (a), “evolved from a common ancestor” happened first.
In sentence (b), “evolved from lower forms of life” happened first.
It indicates the action happened before a certain past action.
Now look for more sentences with the past perfect tense in the reading passage, and summarise their uses in your own words.
1. It was a young man who had left medical school without completing his degree.
2. ... he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family.
3. After Darwin had spent some time in South America, his room on the ship was crowed with samples of the plants and animals he had collected.
4. At that time, people believed that all species had appeared on Earth at the same time, and had not changed since.
5. It seemed their beaks had evolved according to what food was available on that particular island.
6. Over time, it had slowly evolved into many new species.
Activity 2: Read the following groups of sentences and summarise the usage of past perfect tense.
Group 1：
a.Before we got to the train station, the train had already left.
b.Before I could say “thank you”, he had run away.
Summary:表示在过去的某一时间或某一动作之前完成的动作或存在的状态，即“______________________”。
过去的过去
Group 2:
a.By the end of last term, we had learnt 2,000 English words.
b.They had lived there for ten years by then.
Summary: 表示从过去某一时间开始，一直延续到___________________ 的动作，常用的时间状语有by then，by the end of，by the time
过去的另一个时间
Group 3:
a.I had intended to meet him at the airport，but I had an important meeting to attend.
b.I had hoped to take a holiday this year but I was not able to get away.
Summary：
表示_______________等的动词，如hope，want，expect，think，mean，suppose，intend，plan 等后接从句时，一般用过去完成时表示本打算实现而未实现的愿望和计划。
愿望、打算
Group 4：
a.Hardly had I left when it began to rain.
b.No sooner had he sat down than the telephone rang.
Summary：
在句型hardly...when 和 no sooner...than 中，主句用_______________，从句用一般过去时，表示“一......就......”
过去完成时
目标二: To use past perfect tense correctly
Activity 1: Complete the paragraphs with the information from the given sentences. The sentences are the order in which they happened. They can help you to decide the use of tenses.
1 a Natural disasters led to food shortages in the 1960s.
b Yuan Longping began to do research on hybrid rice.
c Yuan Longping developed a better type of rice.
Yuan Longping 1____________ to do research on hybrid rice because natural disasters 2____________ food shortages in the 1960s. In the end, he 3____________ a better type of rice.
began
had led to
developed
2 a Gregor Mendel chose to study pea plants because their characteristics were easy to control.
b Gregor Mendel made important discoveries about genetics.
c Gregor Mendel died in 1884.
Gregor Mendel 4____________ study pea plants because their characteristics were easy to control. By the time of his death in 1884, he 5____________ important discoveries about genetics.
had made
chose to
Background information:
Yuan Longping
Yuan Longping was born in Beijing in 1930.
After he graduated from university in the early 1950s,
he dedicated himself to the research of agriculture.
Yuan had the idea to create a new breed of rice
in the 1960s. Since then, he has worked tirelessly to research and develop a better rice breed. In 1973 he and his collaborators managed to cultivate a hybrid rice species that was superior to many others. This species produced 20 per cent more rice per plant than the commonly grown varieties. For his achievements and contributions, Yuan is known as the “father of hybrid rice” and was awarded the Medal of the Republic in 2019.
Gregor Mendel
Gregor Mendel (1822-1884) was an influential botanist. Mendel worked out the basic principles of heredity by experimenting with plants. In 1866, he published his findings, showing how invisible “factors” (now known as genes) are responsible for predictable visible traits. As a result of his work, he became known as the “father of modern genetics”.
Activity 2: Complete the online encyclopaedia entry with the correct form of the words in the box.
compete decline eat live introduce arrive
Lonesome George
Lonesome George was the last Pinta Island tortoise. He died in 2012. After George’s death, the Pinta Island tortoise was declared extinct.
The extinction of the Pinta Island tortoise is blamed on humans. Before humans 1____________ on the island, the species 2____________ in isolation and 3____________ the plants that naturally grew there. George was discovered many years after their arrival, and by then humans 4____________ new species that 5____________ for the food the tortoises ate. After goats in particular had been brought to the island, the Pinta Island tortoise population 6____________. Eventually, only George remained.
had lived
eaten
had introduced
competed
declined
arrived
Activity 3:Work in pairs. Act out a role-play using the information in Activity 2. One of you will play the keeper of Lonesome George, and the other will play the reporter asking about George. Use the past perfect tense where appropriate.
1 Can you retell the usage of past perfect tense
2 Can you make some sentences with past perfect tense (共28张PPT)
外研选择性必修
第一册
Unit 5
Period 4
Reading
教学目
Lead-in
视频：How do trees communicate
1
2
To get the main idea, detailed information and structure of the passage
To use the key language points from the passage correctly
目标一: To get the main idea, detailed information and structure of the passage
Activity 1: Read the title and the picture of the passage, predict what it is about.
It is about how plants communicate with each other.
Activity 2: Read the passage and finish the two tasks.
Task 1: Skim the passage and choose.
What’s the genre of the passage
A Exposition(说明文)
B Argumentation
C Narration（记叙文）
Task 2: Scan the passage, put the paragraphs into three parts, find out the main idea of each part.
Parts Para.(s) Main idea
1
2
3
Para.1~2
Para.3~5
Para.6
Plants can communicate
Plants use chemicals, sound, or wood wide web to communicate
Maybe one day we will be able to “talk” with plants
Activity 3: Read the passage and find out the ways in which plants communicate.
Plants can communicate with each other by using chemicals, sound and “wood wide web”.
Activity 4: Organise information from the passage and complete the diagram.
Modern research is showing that plants can 1______
Using chemicals The plant releases chemicals 2___________ that are being eaten. When another plant detects the chemicals, it starts to 3____________. Using sound Some plants make noises 4 ________. A chilli plant can 5______________ Some trees make 6______________. Using the “Wood wide web”
This fungal network links 7_____________.
Plants can 8 ________ with each other.
Plants can 9 ________ to attack other plants.
Maybe one day we will be able to “talk” with plants.
Modern research is showing that plants can 1___________________________________
communicate with each other
Using chemicals
The plant releases chemicals 2__________________ that are being eaten.
When another plant detects the chemicals, it starts to 3________________________________________.
from the leaves
release its own, different chemicals
Using sound
Some plants make noises 4 _________________________.
A chilli plant can 5________________________________
________________________________________________
Some trees make 6________________________________
________________________________________________.
Using the “Wood wide web”
This fungal network links 7___________________________.
Plants can 8 __________________________ with each other.
Plants can 9 _______________________________________ to attack other plants.
with their roots
tell if a neighbouring plant is helpful, or unfriendly
clicking noises when there is not enough water, indicating drought is arriving
the roots of different plants to each other
share information and even food
steal food from each other, or spread poisons
Maybe one day we will be able to “talk” with plants.
Activity 5: 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
Personification.
It can make descriptions more vivid.
“Wood wide web” means 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.
3 What do you think are the benefits of studying plant communication
4 What discoveries are described in the two reading passages in this unit and what do their meanings have in common
Passage 1 reveals the discovery of evolution and Passage 2 reveals the discovery of communication between plants. They all reflect that there are numerous secrets in nature that remain to be explored.
Learning to learn
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.
Can you find more sentences with personification from the passage
1.Talking plants have long been a thing of myths and legends.
2.Many cultures have stories of talking trees that give advice as well as warnings to people.
3.This is like a warning, or a call for help: “I’m being attacked!” When another bean plant detects the chemicals from its injured neighbour, it starts to release its own, different chemicals.
4.Some of these chemicals drive insects away. Others attract insects—the wasps!
5.They also “listen” to the noises from other plants. A chilli plant can tell if a neighbouring plant is helpful, or unfriendly.
Activity 6: Work in groups. Give a talk about communication between living things.
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.
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.
What other ways can you think of
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.
Now talk about how well you contributed to your group discussion and help each other to make improvements.
目标二: To use the key language points from the passage correctly
Activity 1: Find the important words, phrases, and language points you want to share with your partner.
Then discuss in groups and share their usage with the class.
1 advice n. 建议; 忠告; 劝告(不可数)
【教材原文】Many cultures have stories of talking trees that give advice as well as warnings to people.
许多文化都有会说话的树的故事，它们给人们提供建议和警示。
【知识归纳】
give advice to sb. 给某人建议
a piece of advice 一条建议
seek one’s advice/seek advice from sb. 向某人征求意见
take/follow one’s advice 采纳某人的建议
advise vt. 建议; 劝告, 忠告; 通知; 警告
advise sb. (not) to do sth. 建议某人(不)干某事
【即学即用】语法填空
If I were you, I would ask our teacher for __________ (advise).
advice
2 injure vt. 伤害, 损害
【教材原文】When another bean plant detects the chemicals from its injured neighbour, it starts to release its own, different chemicals.
当另一豆科植物从它受伤的邻居那里检测到化学物质时，它开始释放自己的化学物质，不同的化学物质。
【知识归纳】
injury n. 受伤, 伤害 injuries(复数)
injured adj. 受伤的, 受损害的
get injured 受伤
injured part 受伤部位
the injured 伤员, 受伤的人(类指, 谓语动词用复数)
【即学即用】
Unexpectedly, the _______ (injure) athlete came first in the 100-metre dash.
injured
3 surprisingly adv. 惊人地, 出人意料地
More surprisingly, plants also use sound to communicate.
更令人惊讶的是, 植物也用声音来交流。
【知识归纳】
surprise vt. 使惊奇; 突袭; 意外发现；n. 惊喜, 惊奇; 意外的事
surprised adj. 惊奇的, 惊讶的; 觉得奇怪的; 感觉意外的
surprising 使人惊讶的; 出人意料的
take sb. /sth. surprise 使吃惊; 撞见; 奇袭
a big surprise 一个大惊喜
【即学即用】语法填空
(1) It seems that sustainable living is ___________ (surprise) easy and affordable.
(2) The _________ (surprise) look on his face suggested that he hadn’t expected that would happen.
surprisingly
surprised
4 call for 需要; 要求
【教材原文】This is like a warning, or a call for help.
这就像一个警告, 或者一个求助电话。
【归纳拓展】
call for 需要; 要求; 去接某人
call in 顺便拜访; 请人来帮忙; 电话通知
call off 取消
call on/upon 呼吁; 号召
call out 喊叫
call up 使想起, 使回忆起
【即学即用】语法填空
(1) The trip to Italy might be called _________.
(2) The film called _________ memories of my little brother.
off
up
5 drive away 驱赶走
【教材原文】Some of these chemicals drive insects away.
其中一些化学物质可以驱赶昆虫。
【知识归纳】
drive v. & n. 驾驶
drive sb. to 开车送某人去……
drive down to 开车去
drive out of 驱赶出
drive. . . off/away 驱赶走
drive on 开车继续赶路
driving license n. 驾驶执照
driving test n. 驾驶执照考试
【即学即用】语法填空
(1) He saw the accident but drove _________.
(2) Reading some jokes will drive _________ your negative feelings and make you feel much better.
on
away
6 in some ways 在某些方面; 在某种程度上
【教材原文】It is in some ways similar to the Internet we use.
它在某些方面类似于我们使用的互联网。
【归纳拓展】
all the way 总是; 一直
on the/one’s way 在……路上
by the way 顺便
in a way/ in one way/ in some way/ways 在某种程度上
in no way 决不
no way 没门, 不可能
in the way 挡道; 妨碍
make one’s way 前进
have a long way to go 有很长的路要走
in this/that way 以……方式
7 With us long believing that talking plants are fantasy, new research has revealed something amazing: it appears that plants can communicate after all.
with us long believing that...在句中作状语。此处“with的复合结构”形式，即“with+名词/代词+非谓语动词”。
在此结构中，非谓语动词可以是不定式（多指动作尚未发生）、动词-ing形式（多指动作正在进行）、动词-ed形式（与前面的名词构成被动关系）。例如：With Tim guiding us，we had no difficulty in finding the destination.（由于Tim的引导，我们毫不费力地找到了目的地。）With a lot of work to do，he felt anxious.（有好多工作有待完成，他感到焦虑。）With the problem settled，he felt relieved.（问题解决了，他如释重负。）
after all 意为“毕竞，终究”。例如：Don’t scold him anymore.
After all，he is still a little kid.（别再批评他了，毕竟他还是个小孩子。）
Activity 2: Complete the summary with the correct words or the correct forms of the words in the bracket according to the passage.
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.
to communicate
attacked
are being eaten
a
its
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
1 Can you retell how plants communicate with each other
2 How is wood wide web linked (共30张PPT)
外研选择性必修
第一册
Unit 5
Period 1
Starting out & Understanding ideas (I)
教学目
Lead-in
1 What species do you recognise in the picture
2 What factors can cause the process of evolution
Paramecium, earthworm, snail, crab, fish, tortoise, bird, horse, human, frog...; alga, moss, fern, plant...
The ever-changing environment of nature; environmental changes; population immigration; genetic mutation; cultural preferences...
1
2
To develop a sense of evolution by watching the video
To get the main idea of the text and specific information about the journey of discovery
目标一：To develop a sense of evolution by watching the video
Activity 1: Look at the page from a science magazine and answer the questions.
1.What do you know about these animals
What makes them special
2.What other similar animals do you know about
Share your knowledge with the class.
They are all species that exist thousands of years on earth; They are old and rare (unusual).
Background information
The Komodo dragon
The Komodo dragon is the largest lizard in the world. It can grow to three metres in length and can weigh about 135 kilograms. Despite its size and weight, it can run for short distances at up to 20 kilometres per hour.
The Duck-billed platypus
The duck-billed platypus is a small egg-laying mammal (up to 60 cm in length) found only in Eastern Australia including Tasmania. As its
name suggests, it has a mouth that looks like a duck’s bill, while its thick fur and flat tail are similar to those of a beaver.
Nautilus
As one of the oldest sea animals in the world, the nautilus has hardly changed in about 500
million years, and that is why it is often given the name “living fossil”.
Activity 2: Watch the video and answer the questions.
1 How can seeds travel How can this benefit plants
2 Can you think of another example of seeds travelling Share it with the class.
Seeds usually are carried by the wind, water, and animals.
Plants can have a better chance at life.
目标二: To get the main idea of the text and specific information about the journey of discovery
Activity 1: Read the passage and talk about your understanding of the title.
Most commonly, people believe that a journey means a trip from one place to another, especially over a long distance and literarily a journey refers to the process by which something gradually changes and develops. The title may indicate that Darwin’s research work leading to his discovery of evolution and the origin of species took quite a long time and great efforts, determination and courage to achieve.
Activity 2: Read the passage again and find out the genre of the passage.
He left England on the ship, the Beagle, in 1831.
When the Beagle reached the Galápagos Island in 1835, Darwin saw a variety of new species.
It is a narrative in time order.
Activity 3: Choose the main idea of the passage and give your reasons.
1. Darwin’s interest in various living things made him a great naturalist.
2. Darwin’s journey on the Beagle inspired his Theory of Evolution.
3. Darwin went on a journey to confirm his theory that humans had evolved over time.
Activity 4: Read to find out the detailed information about the journey: the time and what he did or thought.
Time What he did/thought
He left England on the ship, the Beagle.
In 1831
He left England on the ship, the Beagle.
He studied the samples of plants and animals and asked himself the question: how did different species come to exist He noticed that some species of animals were very similar to each other.
Time What he did/thought
In 1835 when he reached the Galápagos Islands.
In 1859
His book, On the Origin of Species, was published, which immediately caused a storm.
He noticed that there was a difference between the fincheson each of the islands. He suspected that the finches had evolved from a common ancestor. Over time, it had slowly evolved into many new species.
Activity 5: Number the puzzle pieces in order.
Organise information from the passage and complete them.
1
4
2
3
5
On his journey
Darwin studied _______________________________________________
_____________________________________________________________
He noticed that some species of animals were _______________________
General ideas
How did different species _______________________________________
____________________________________________________________
Look for more evidence
On the Galapagos Island:
He noticed ___________________________________________________
_____________________________________________________________
It seemed the beaks ____________________________________________
______________________________________________________________
various living things in their natural environments and samples of the plants and animals he had collected
very similar to each other
come to exist
Maybe animals evolved as they adapted to their changing environments
that there was a difference between the finches on each of the islands
had evolved according to what food was available on that particular island.
Develop ideas
Darwin suspected that the finches ________________________________
_____________________________________________________________
and it had _____________________________________________________
Propose a theory
The Theory of Evolution: living things, including humans, _____________
_____________________________________________________________
had evolved from a common ancestor, which had arrived on the islands a long time before
slowly evolved into many new species
had evolved from lower forms of life
Now discuss why Darwin did not publish his Theory of Evolution until 1859, about twenty years after his discovery. Do further research if necessary.
Activity 6: Think & Share
1 Why were many people “shocked” by Darwin’s theory
At that time, people believed that all species had appeared on Earth at the same time and had not changed since, but Darwin’s theory proposed that living things, including humans, had evolved from lower forms of life, which, as a result, shocked many people.
2 What kind of person was Darwin according to the passage
Darwin was a determined man. He had strong curiosity and interest in science and was good at thinking and making discoveries. These good qualities helped Darwin make such a long journey from 1831 to 1859 to pursue his scientific exploration and finally published the great book, On the Origin of Species.
3 How do you think the human species will evolve in the future
4 What have you learnt about the spirit of scientific exploration How can this spirit help you in your life and studies
外研选择性必修
第一册
Unit 5
Period 1
Starting out & Understanding ideas (II)
Activity 7: Find the important words, phrases, and language points you want to share with your partner. Then discuss in groups and share their usage with the class.
1 distant adj.遥远的，久远的；冷淡的，疏远的；远房的，远亲的
【教材原文】The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known.”
Beagle号的船长想要招募一个能通过去访问遥远的少有人知的国家的机会获利的人。
【知识归纳】
（1）distance n.
[C，U]距离；[U]（时间的）久远，（空间的）遥远；[U，C]疏远
in the distance 在远处from a distance 从远处
（at/from a distance of...在/从 远的地方（of后跟具体的距离）
（2）distantly adv.遥远地；模糊地
【即学即用】单句语法填空
(1) We could see nothing in the thick fog __________ a distance of five metres, so we got lost.
(2) My company is five miles distant __________my home.
at/from
from
2 predict vt.预言；预告；预报
【教材原文】What’s more, he had recently received a letter from his father predicting that...
而且，他最近收到了一封来自他父亲的信，预言他......
【知识归纳】
（1）predict + that/wh-A 预言
It is predicted that...据预测/据预报
（It作形式主语，that引导的从句为真正的主语）
（2）prediction n. 预言，预测
predictable adj. 可预见的，可预料的
unpredictable adj. 不可预料的
3 crowded adj.挤满的；拥挤的
【教材原文】..., his room on the ship was crowded with samples of the plants and animals he had collected.
...，他在船上的房间挤满了他收集的动植物样本。
【知识归纳】
（1）be crowded with..挤满
（2）crowd in（on）sb.涌上（心头），涌入（脑海）
crowd into one’s mind 上某人的心头
crowd into...大批涌入
（2）a crowd of/crowds of...大群很多
4 inspire vt.（1）鼓励，激励，后接“人”作宾语；（2）启发思考，赋予灵感
【教材原文】..., but enough to inspire Darwin to look for more evidence.
...，但是足以鼓舞达尔文去寻找更多证据。
【知识归纳】
（1）inspire sb.to do sth.激励某人去做某事
（2）inspiring adj.鼓舞人心的，启发灵感的 inspired adj.受到鼓舞的
（3）inspiration n.灵感；启发灵感的人
5 suspect vt.怀疑，猜想 n.嫌疑犯，可疑对象
【教材原文】Darwin suspected that the finches had evolved from a common ancestor.
达尔文怀疑这些雀科鸣禽都从共同的祖先进化而来。
【知识归纳】
（1）suspect that...怀疑/认为（尤指坏事可能属实或发生）
suspect sb.of（doing）sth.怀疑某人（做了）某事
（2）suspect sth./sb.to be...猜想某物/某人.
6 convincing adj.令人信服的；有说服力的
【教材原文】But Darwin’s scientific studies were so convincing that more and more people started to believe his theory.
（1）convince vt.使确信；使信服；说服
convince sb.of sth./that...使某人相信某事
（2）convince sb.to do sth.说服某人做某事
（3）convinced adj.坚信不疑的，确信的
be convinced of/that...深信不疑；确信；坚信
7 of all time意为“有史以来，历史上”，常与形容词最高级连用。
【教材原文】
...would lead to one of the most important scientific discoveries of all time.
......能引出有史以来最重要的科学发现。
【归纳拓展】
（1）all the time 一直始终
（2）in time 及时
（3）on time准时
（4）at times 有时
（5）at one time 曾经
（6）at a time每次
（7）in no time立刻，马上
（8）at no time决不（位于句首时句子用部分倒装）
8 Darwin saw a variety of new species，but it was the birds that interested him the most.
Paraphrase：Among all different kinds of species he saw，Darwin was most interested in the birds.
本句中的a variety of是固定搭配，意为“各种各样的”，various是variety的形容词形式，表达different kinds of这个意思时，a variety of和various可以互换。例如：Our school provides a variety of/various after-class activities for the students.（我们学校为学生提供多种多样的课外活动。）
but后面的句子，该句使用了英语中的常见句式-强调句，基本结构为：It is/was...that/who..例如：It was on the ship，the Beagle，that Darwin studied a variety of species.（Darwin是在名为 the Beagle的船上对多种物种进行了研究。）
1 Can you retell Darwin’s trip on Beagle
2 What influence does the Theory of Evolution have on science (共16张PPT)
外研选择性必修
第一册
Unit 5
Period 5
Writing & Presenting ideas
1
2
To catch the main idea and structure of an observational journal, and find some expressions related to the growth of a plant, then write an observational journal
To give a presentation about a nature documentary you like
目标一：To catch the main idea and structure of an observational journal, and find some expressions related to the growth of a plant, then write an observational journal
Activity 1: Read the observational journal and answer the questions.
Week 1
The daffodil bulbs have been planted side by side in soil, with the pointed ends facing up. Water has been added and the container was put in a cool, dark place. The bulbs are being watered regularly.
Week 3
A single stem has sprouted from each of the bulbs. On each stem are two leaves, which are long and narrow with a waxy texture. The container has been moved to a sunny, but cool place.
Week 6
The stems have grown to around 20 centimetres tall and each has produced a single flower. The flowers are yellow and white, and shaped like trumpets.
1 How were the daffodil bulbs planted
2 In what environment did the leaves grow
3 What do the flowers look like
They were planted side by side in soil, with pointed ends facing up.
The leaves grew in a sunny, but cool place.
The flowers are yellow and white, and shaped like trumpets.
Activity 2: Read the journal again, and summarise its structure and find out some expressions such as nouns, verbs, adjectives, and adverbs related to the process of the growth of the daffodil bulbs.
Time
What it is like, including height, shape, color, texture.
environment
Nouns: bulbs, container, water, stem, leaves, flowers, trumpets
Verbs: plant, add, put, water, sprout, move, grow, produce, shape
Adjectives: cool, dark, long, narrow, waxy, sunny, tall, single, yellow, white
Adverbs: regularly
Activity 3: Work in pairs. Look at the pictures and talk about how the sunflowers grows.
Now write your observational journal about the sunflower.
Activity 4: Work in pairs. Make improvements to each other’s observational journal and share them with the class.
Sample:
An observational journal about the sunflower
1 June
Covered with 1-2 cm of moist soil, the sunflower seed takes a few days to come up after being planted. Water has been added regularly and the hard seed coat softens in the damp soil to allow the first root to pierce downwards and the first leaves to push to the soil surface.
6 July
The root continues to grow downwards. The single stem grows hollow and smooth, revealing large spade-shaped leaves from the growing tip. Gradually, the plant’s growing tip reveals the first hints of development of the flower bud. The plant stem becomes more woody.
26 July
About three weeks after the flower bud first becomes visible at the tip of the sunflower stem. It enlarges and begins to reveal a flattened disc. Over the course of one week, the yellow ray florets, and disc florets bloom across the core of the sunflower blossom. It is yellow, looking beautiful.
目标二: To give a presentation about a nature documentary you like
Activity 1: Work in pairs. Look at the information of the nature documentaries and answer the questions.
1 Can you guess what secrets of nature are revealed in these documentaries
2 What other nature documentaries have you watched
Which one do you like most Give your reasons.
The earth is the mother of mankind.
Protect the ecological environment, create a good home.
Caring for nature is our common responsibility.
Animal World (动物世界), Dynasties (王朝)
Activity 2: Choose one nature documentary you like and
complete the notes.
Title: __________________________________________
Main theme: ____________________________________
Reasons you recommend it: ________________________
_______________________________________________
_______________________________________________
_______________________________________________
Human and Nature
introduction of an animal—the antelopes
beautiful pictures and instructive meaning. Its purpose is to arouse people’s awareness of protecting the extinct species on earth.
Activity 3: Practise presenting information about your documentary. Consider the following:
1 the structure of your presentation
2 useful words, expressions and structures
Give your presentation to the class.
Sample:
Born in China is a 2016 nature documentary film directed by Lu Chuan. A co-production between Disney nature and Shanghai Media Group, the film was released in China on August 12, 2016, in the United States on April 21, 2017, one day before Earth Day, and in France on August 23, 2017. The film focuses on a snow leopard named Dawa and her cubs, a young golden snub-nosed monkey named Tao Tao, a female giant panda named Ya Ya along with her daughter Mei Mei, and a herd of chiru. The American release of the film is narrated by John Krasinski, the Chinese release is narrated by Zhou Xun, and the French release is narrated by Claire Keim
1 In what order is an observational journal written
2 What is the common theme of nature documentaries (共15张PPT)
外研选择性必修
第一册
Unit 5
Period 3
Listening and Speaking
1
2
To get the main idea of the passage and list expressions related to biodiversity by reading
To get the main idea of the listening material and write down useful expressions related to the topic of cells and bacteria and make a conversation about biodiversity
目标一：To get the main idea of the passage and list expressions related to biodiversity by reading
Activity 1: Read the passage quickly and get the main idea of it.
Earth is home to millions of different species. Some can be very small, like bacteria and viruses, which are so small that we cannot see them with only our eyes. By contrast, the largest animal species so far found on our planet is the blue whale, which can grow up to almost 30 metres in length and weigh over 130,000 kilos. The toughest species is probably the water bear. This tiny organism can survive temperatures from 150 ℃ to a below freezing -272 ℃. To best survive in their environment, each species has developed its own unique physical characteristics.
Each year, scientists identify around 15,000 new species. However, diversity on our planet is such, that there are still millions of species on Earth remaining to be discovered.
It introduces the largest animal species: the blue whale and the toughest species — the water bear and their characteristics.
Activity 2: Read the passage and answer the questions.
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 the toughest species, which can survive in extreme temperature.
2 What other unusual life forms do you know of
Activity 3: Complete the paragraphs with the correct
form of the words and expressions in the box.
ancestor scientific be native to primitive habitat appearance be home to ecosystem
1 The Galapagos Islands are renowned worldwide for their unique biodiversity. The Giant Tortoise Reserve on Santa Cruz 1_____________ several species of giant tortoise that 2_____________ the Galapagos Islands. The island is also home to the Charles Darwin Research Station, where 3_____________ studies are carried out.
is home to
are native to
scientific
ancestor scientific be native to primitive habitat appearance be home to ecosystem
2 Mangroves are one of the coastal plants that grow on Isabela. They serve as the 4_____________ for various birds and fish, and are very important to the 5_____________.
habitats
ecosystem
3 Lguanas can be found on San Cristobal. They have a very special 6_____________, with comb-like spines on their back. There is evidence that all the different iguanas have developed from more 7_____________ ones and share a common 8_____________.
appearance
primitive
ancestor
目标二: To get the main idea of the listening material and write down useful expressions related to the topic of cells and bacteria and make a conversation about biodiversity
Activity 1: Listen to the podcast and choose the statements that are made.
1. Biodiversity is important.
2. Bacteria are always harmful to humans.
3. Some species of bacteria are used in food production.
4. Many species of bacteria recycle dead organic matter.
5. Our immune systems are able to fight off all germs.
Activity 2: Listen again and complete the fact sheet.
Cells
Every living thing is 1 __________________________.
They are like 2 _________________________________.
In the human body there are about 3 _________________ human cells and around 4 _________________________ bacteria cells.
made up of cells
bricks that are used to build houses
thirty trillion
thirty-nine trillion
Bacteria
Most bacteria in the human body can 5 ______________________
In the food production process, bacteria can 6 __________ dead organic matter.
help with digestion
break down
Activity 3: Complete the boxes with the expressions from the podcast.
Do you know about...
By the way,...
Actually,...
Have you heard of...
In fact,...
Speaking of which,...
Checking background knowledge
Adding information
Do you know about...
Have you heard of...
By the way,...
Actually,...
In fact,...
Speaking of which,...
Activity 4: Work in pairs. Look at the pictures of the species native to different regions of China. Talk about biodiversity in China using the words and expressions in this section. Do online research to find more information.
1 Can you list more words and expressions related to biodiversity
2 Can you introduce cells or bacteria
