Unit 5 Look into Science.Lesson 28 The Study of Living Things.课件

(共32张PPT)
Unit 5
Look into Science
Lesson 28
The study of Living Things
Chip Taylor
biology
butterfly
migrate
fantastic
completely
grandchild
female
milkweed
chemical
puzzling
奇普.泰勒
n. 生物学；生物
n. 蝴蝶
v. 移居；迁徙
adj. 奇异的；了不起的
adv. 完全地
n. 孙子;孙女;外孙;外孙女
n. 雌性的动物或植物；女子
n. (植)马利筋
n. 化学物质
adj. 令人费解的
Words and Expressions
What do we call the science that studies living things
Biology!
Lesson 28
The Study of Living Things
plant
animal
insect
cell
gene
What are related to biology
biologist
1. To read and understand the passage about North American butterfly
2. To review the use of attributive clauses
3. To learn some useful words and expressions:
fantastic, cut down, lay legs…
Objectives
Butterflies are beautiful.
Do you know them
红带袖蝶
Heliconius melpomene
88多涡蛱蝶
Eighty-eight butterfly
猫头鹰环蝶
Caligo eurilochus
蓝闪蝶
Morpho menelaus
多尾凤蛾
Urania ripheus
宽纹黑脉绡蝶
Greta oto
黑脉金斑蝶
Monarch butterfly
The Monarch butterfly is one the most readily recognized and beloved insects in North America. Read the article carefully and get more detailed information about this kind of butterfly.
What do you know about this kind of butterfly What mysteries of this kind of butterfly do you know about
Part I
Fantastic facts about butterflies
Part Ⅱ
Things that Dr. Taylor worries about and now things are improving
Part Ⅲ
Things that scientists can’t understand
Now skim the passage and divide it into different parts.
Pay attention to these Attributive Clause sentences.
Read Part 1 and complete the sentences.
Dr. Chip Taylor studies ___________ North American butterfly.
This butterfly travels about 4000 kilometres south _______.
Fantastic facts about the butterfly have been ________ Dr. Taylor’s _________.
one kind of
in fall
drawing
attention
Fantastic facts about butterflies
4. In Mexico, __________ 230 million butterflies spend the winter.
5. The butterflies that _________ the south are the great-great grandchildren of the butterflies that ________ the north.
6. When they _______ travel north in spring, the females ________. They lay eggs on only once plant: milkweed.
as many as
begin to
lay eggs
return to
left for
Read Part 2 and complete the sentences.
In Mexico, people ________ the trees that the butterflies need to _______ because they want more land for farming.
In United states and Canada, farmers use chemicals ____ kill milkweed.
Now things are improving. Mexico has begun to protect ________ its forests.
The United States and Canada have __________ farmers to use less chemicals.
Things that Dr. Taylor worries about and now things are improving
cut down
rest on
that
encouraged
parts of
Things that scientists can’t understand
Read Part 3 and complete the sentences.
Scientists still don’t understand ____ the butterflies know _____ to fly south.
And how do all the ________________________ find the same forest in Mexico every year？
This is _____ puzzling ____ interesting for many scientist.
how
when
both
and
great-great grandchildren
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1
Complete the table.
Fantastic facts about butterflies
Things that Dr. Taylor worries about
Things that scientists can’t understand
.The butterflies always__________ to the same small piece of forest and______ the winter there.
.The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
.The females ____eggs on only one plant: milkweed.
. In Mexico, people cut down the trees that the butterflies need to _____ on.
. In the U.S. and Canada, farmers use chemicals that ____milkweed.
. How do the butterflies know when to fly south
. How do the great-great grandchildren of the butterflies______ the same forest
return/fly
spend
lay
rest
kill
find
Discuss
Would you like to be a biologist when you grow up Why or why not
2
Join the sentences to make attributive clauses.
1. I asked him to mail the letter. I wrote the letter to my cousin.
___________________________________
___________________________________
2. Yesterday I met a boy. The boy is a new member in our art club.
______________________________________________________________________
I asked him to mail the letter which/ that/不填 I wrote to my cousin.
Yesterday I met a boy who/that is a new member in our art club.
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3. Mary was carrying a bag. The bag cost her a lot of money.
____________________________________________________________________
4. Football is a team sport. Football is popular all over the world.
____________________________________________________________________
Mary was carrying a bag which/that cost her a lot of money.
Football is a team sport which/that is popular all over the world.
3
Work in groups of three to play a game.
Task tips: Each group should prepare some pieces of paper and divide them into three columns. Student A writes a person’s name in the first column, folds the paper and passes it to Student B. Student B writes a statement beginning with “who”, folds the paper and passes it to Student C. Student C must finish the sentence and read it out loud.
Example:
Mr. Brown
who is a biologist
will give us a talk
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draw one’s attention
as many as
cut down
both … and…
leave for
lay legs
Translate the Chinese into English.
吸引某人的注意力
和…一样多
砍伐
既……也……
到，去；出发，前往
产卵
Language points
1. Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention.
这种令人着迷的蝴蝶一直吸引着泰勒博士的注意。
draw one’s attention 吸引某人的注意力
He tries to draw our attention to the painting.
他试图把我们的注意力吸引到这幅画上。
The wonderful basketball game drew my attention.
精彩的篮球比赛吸引了我的注意。
2. Here, as many as 230 million butterflies spend the winter.
在这里，多达两亿三千万只蝴蝶在这里过冬。
as+ adj. /adv. +as意为“和……一样”，表示同级的比较。
This film is as interesting as that one.
这部电影和那部电影一样有趣。
Your pen writes as smoothly as mine.
你的钢笔书写起来和我的一样流畅。
3. The butterflies that return to the south are the great-great grandchildren of the
butterflies that left for the north.
这些飞回南方的蝴蝶是春天飞往北方蝴蝶的曾曾子孙。
leave for 到；去；出发，前往
They left for Shanghai yesterday.
他们昨天去上海了。
They will leave Beijing for Guangzhou tomorrow.
他们明天要离开北京去广州。
4. When they begin to travel north in spring, the females lay eggs.
当他们春天开始向北方飞行时，雌性蝴蝶产卵。
lay eggs意思是“产卵，下蛋”。lay的过去式和过去分词为laid，现在分词为laying。
It is one of only two mammals that lay eggs.
它是仅有的两种产蛋哺乳动物之一。
They only lay eggs about every five years.
它们只是每隔五年才产卵一次。
5. But in Mexico, people cut down the trees that the butterflies need to rest on because
they want more land for farming.
但是在墨西哥，人们砍伐了蝴蝶赖以栖息的树木，因为他们需要更多的耕地。
cut down 砍伐；消减
Many trees had been cut down so that the soil was washed away.
许多树木被砍伐了，结果土壤被雨水冲走。
We must cut our expenses down in order to live through the whole year.
我们必须减少消费，以便度过全年。
Ⅰ. 根据汉语提示完成句子。
1. I have a ________ (极好的) social life.
2. The most profound unsolved problem
in ______ (生物学) is the origin of life itself.
3. Some birds _______ (迁徙) as season changes.
4. I__________ (完全地) agree with these
views.
5. The spelling of English is often
________ (令人费解的).
fantastic
biology
migrate
completely
puzzling
Ⅱ. 翻译下列句子。
汤姆有能力吸引大家的注意力。

2. 他整天像蜜蜂一样忙碌。
3. 我过去常常在8:30去工作。

4. 这篇稿子太长，得砍去一半。
Tom has ability to draw everybody’s
attention to him.
He is as busy as a bee all day.
I used to leave for work at 8:30.
The article is too long and should be
cut down by half.
本课重点回顾
Fantastic facts about the butterfly have been drawing Dr. Taylor’s attention.
The butterflies that return to the south are the great-great grandchildren of the butterflies that left for the north.
Homework
Preview the words and expressions in Lesson 29.
Fantastic _____: Research and write a report about an animal or insect that you think is fantastic. Include a drawing or image of the animal or insect.