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Unit 6 Looking into science
第 3 课 时
Lesson 3 DNA is fantastic!
单词：repeat，relative
短语：except for，interact with，in the coming years，do with
句子：The blueprints to create a person, an animal, a plant or any other living
being — are called DNA.
1
能够理解文章中的关键细节，解释什么是DNA及其在健康和技术中的作用，并用简单的英语复述DNA事实；能够掌握简单的未来被动语态（will be + v.-ed）和文中与科学相关的核心词汇；能够与与合作伙伴讨论DNA的重要性，并就其在科学和健康领域的未来应用分享想法。
2
Learning Goals
Watch a video
课 堂 学 习
Vocabulary
blueprint / blu pr nt/
complicated / k mpl ke t d/
living / l v /
strongly / str li/
twin /tw n/
repeat /r pi t/
identify /a dent fa /
n. 蓝图；方案
adj. 复杂的
adj. 活着的；居住的
adv. 深刻地；强地
n. 双胞胎之一
v. 重复；重做
v. 确认；找到
Vocabulary
课 堂 学 习
relative / rel t v/
distant / d st nt/
gene /d i n/
interact / nt r kt/
edit / ed t/
genetic /d net k/
n. 亲戚；亲属
adj. 比较的；相关联的
adj. （亲属关系）远的；遥远的
n. 基因
v. 相互作用；交流
v. 修改；编辑；编纂
adj. 基因的；遗传学的
except for 除了
interact with 与……互动
in the coming years 在未来几年中
do with 处理
Structures and Expressions
What do you know about DNA Talk with your partner.
1
DNA (=deoxyribonucleic acid)
脱氧核苷酸
DNA is in our body. It makes us look like our parents.
It decides our looks and height.
Everyone has unique DNA.
Skim the passage and decide how many parts it can be divided into, and what the main idea of each part is.
Fast reading
2
Part 1: It tells us the definition of DNA and DNA influences our physical features
before we are born.
Part 2: It shows three fantastic facts about DNA.
Part 3: DNA is very important and will be widely studied in the future.
Read the passage carefully and answer the questions.
Careful Reading
A What is a blueprint
B Which is more complex, building a living thing or building a car
C Whose DNA is related to yours
It is a drawing that shows how to build something.
Building a living thing is more complex.
My parents, grandparents and other relatives.
A blueprint is a drawing that shows how to build something, like a car. But a person is a lot more complicated than a car. The blueprints to create a person, an animal, a plant or any other living being are called DNA.
How tall are you What colour are your eyes What size are your feet All these things are strongly influenced by your DNA before you were born.
Here are some fantastic facts about DNA:
● Except for some twins, each living thing has its own unique DNA. You have your own DNA, but it repeats patterns from your parents’. From your DNA, scientists can identify not only you, but also your relatives. That includes your parents, grandparents, and more distant relatives — their DNA just wouldn’t be quite as similar to yours.
● There are copies of your DNA in every part of your body. For example, your finger has the same DNA as your hair.
● Some health conditions can be caused by problems in your DNA. Scientists can look for these problems and, sometimes, help you before you become sick. Future technologies will allow scientists to better understand how genes interact with each other and how they will be edited to prevent genetic diseases.
DNA plays an important role in our health and technology. It will be widely studied and researched in the coming years as more discoveries are made. What do you think we could do with DNA someday
Read the passage again carefully and complete the table.
a person
an animal
some twins
every
genetic diseases
studied and researched
Read the sentences and pay attention to the parts in yellow. Then fill in the blanks.
3
... they will be edited to prevent genetic diseases.
It will be widely studied and researched in the coming years as more discoveries are made.
When and why do we use this form
The structure of the passive voice in simple future tense is “will+be+done”.
To talk about things that will be done in the future and focus on the receivers of the action, not on who does the action.
A An exhibition of model planes __________ (hold) at the Science
Museum next week.
B The new lab __________ (build) in the coming year.
C More fantastic facts about DNA (discover)
in the near future.
D Future technologies __________ (use) to help scientists better
understand DNA.
will be held
will be built
will be discovered
will be used
被动语态（Passive voice）
一般将来时被动语态的构成如下：
1. shall/will be done
肯定句：shall/will be done
否定句：shall/will+not+be+done
例句：She will not be greatly missed.
一般疑问句：将 shall/will 提到主语的前面
例句：—Will she be greatly missed
—Yes, she will./No, she won’t.
特殊疑问句：特殊疑问词 + 一般疑问句
例句：Why will she be greatly missed
2. be going to be done
肯定句：be going to be done
例句：Some old buildings are going to be put down.
否定句：be 的否定式 + going to be done
例句：The problem isn’t going to be discussed at the meeting tomorrow.
一般疑问句：将 be 提到句首
例句：—Are these trees going to be cut down
—Yes, they are./No, they aren’t.
特殊疑问句：特殊疑问词 + 一般疑问句
例句：When are these trees going to be cut down
3. be to be done
肯定句：be to be done
例句：The sports meeting is to be held on April 10.
否定句：be 的否定式 + to be done
例句：The machines are not to be repaired tonight.
一般疑问句：将 be 提到句首
例句：—Are new textbooks to be published next week
—Yes, they are./No, they aren’t.
特殊疑问句：特殊疑问词 + 一般疑问句
例句：When are new textbooks to be published
Read and complete the conversation.
4
A. In the future, it will be used to diagnose and treat diseases.
B. It’s amazing that something so small can hold so much important data.
C. It’s a complex topic.
D. My finger has the same DNA as my hair.
D
B
A
C
complicated adj. 复杂的，难懂的 complicated structure 复杂的结构
uncomplicated adj. 简单的，不复杂的
complicate v. 使复杂化 complication n. 复杂情况；并发症
例句 :The human body is far more complicated than a machine.
人体远比一台机器要复杂。
1. But a person is a lot more complicated than a car.
但人比汽车复杂得多。
Language points
strongly adv. 强烈地；极大地；坚定地 strong adj. 强大的；强烈的
strength n. 力量，强度 strengthen v. 加强，增强
be strongly influenced by… 深受…… 的影响
例句：Many people strongly support this new policy.
很多人坚定地支持这项新政策。
2. All these things are strongly influenced by your DNA before you were born.所有这些特征在你出生前都深受你的DNA的强烈影响。
repeat v. 重复；复制；重演 n. 重复
repeated adj. 重复发生的
repetition n. 重复，重现
例句：Please repeat your question slowly.
请缓慢地重复一遍你的问题。
3. You have your own DNA, but it repeats patterns from your parents'.你有自己的DNA，但它重复了你父母的模式。
①identify v. 识别；辨认；鉴定
identification n. 识别；身份证明 (ID)
identical adj. 完全相同的
例句：You can identify the bird by its red tail.
你可以凭借红色的尾巴辨认这种鸟。
4. From your DNA, scientists can identify not only you, but also your relatives.从你的DNA中，科学家不仅可以识别出你，还可以识别出你的亲属。
②relative n. 亲戚，亲属 adj. 相对的
relate v. 联系；讲述
relation n. 关系，联系
relationship n. 人际关系
例句：I will visit some of my relatives during the holiday.
假期期间我会拜访我的一些亲戚。
①gene n. 基因 genetic adj. 基因的；遗传的 genetics n. 遗传学
例句：Scientists keep doing research on plant genes.
科学家持续对植物基因开展研究。
例句：Some plants show special genetic features.
一些植物表现出特殊的遗传特征。
5. Future technologies will allow scientists to better understand how genes interact with each other and how they will be edited to prevent genetic diseases.未来的技术将使得科学家能够更深入地理解基因之间的相互作用方式，并通过编辑基因来预防遗传性疾病。
②interact v. 相互作用；相互影响；交流互动
interaction n. 相互作用，互动
interactive adj. 交互式的
interact with sb. 和某人互动
例句：Kids should learn how to interact with their classmates.
孩子们应该学会怎样和同学交往互动。
③edit v. 编辑；剪辑；编纂 editor n. 编辑；编者 edition n. 版本
例句：He will edit this article before publishing it.
他会在发表之前编辑这篇文章。
Practice
一、用括号内单词的适当形式填空
1. This math question is much ________________ (complicate) than the last one.
2. The two ________ (twin) share many small living habits.
3. The police can ________ (identification) the thief from the video.
4. I often visit my ________ (relative) during the Spring Festival.
5. Chemicals ________ (interact) when you mix them together.
6. Some old videos ____________ (edit) by workers in the near future.
7. This ancient poem ____________ (study) by middle school students next year.
8. Many traffic accidents _________ (cause) by carelessness every year.
more complicated
twins
identify
relatives
interact
will be edited
will be studied
are caused
二、选词填空
play an important role in be strongly influenced by
except for in the coming years the same as
1.Your personality your family environment
and life experiences.
2._______________ a few minor mistakes, your composition is excellent.
3.Renewable energy will protecting the
environment in the future .
4.Your fingerprint is not _______________ anyone else's in the world.
5.Scientists believe that more breakthroughs in genetic research will be
made __________________.
is strongly influenced by
Except for
play an important role in
in the coming years
the same as
三、翻译句子
1.未来将会建造更多新学校。
2.他的成功深受努力的影响。
3.我们应该尽力防止污染。
4.Reading plays an important role in our study.
More new schools will be built in the future.
We should try our best to prevent pollution.
His success is strongly influenced by his hard work.
阅读在我们的学习中起着重要作用。
1. Work with a partner. Ask and answer 3 questions about how DNA influences our appearance and health.
2. Write 4 sentences about future uses of DNA technology, using at least one simple future passive structure in each sentence.
Homework

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