UNIT 3 Section Ⅱ Lesson 1-【金版新学案】2025-2026学年新教材高二英语选择性必修第一册同步课堂高效讲义教师用书word（北师大版）

Section Ⅱ　Lesson 1

Step One：Pre-reading

Look at the picture and answer the following question.

How much do you know about extinction？

The reasons for biological extinctions are varied.The key is the rapid growth of the population.Scientists say the main cause of today's species extinction is the loss of large areas of animals habitats and environmental destruction.Human beings are in an absolute “supremacy” on the current earth，and the consideration of any event is self-centered on themselves，which will inevitably affect the development of other creatures，and the monotony of biodiversity is inevitable.

Step Two：While-reading

Ⅰ.Read for the main idea

　What's the main idea of the text？

A.Six secret processes in the history of mankind.

B.Some ways for man to save birds from extinction.

C.Some measures to avoid extinction of the human race.

D.The characteristics and preventive measures of the sixth extinction.

答案：D

Ⅱ.Match the main idea with each paragraph

Para.1　　A.The reasons leading to extinction were introduced.

Para.2　　 B.It mainly introduces the five mass

extinctions in human history.

Paras.3-4 C.They mainly introduce the consequences of the sixth extinction and the ways to avoid it.

答案：Para.1 B　Para.2 A　Paras.3-4 C

Ⅲ.Read for the structure

Ⅳ.Read for details

1.Why does the author mention the extinctions in history in the first paragraph？

A.To show us the terrible disasters for mankind.

B.To tell us the climate's impact on wildlife.

C.To introduce the topic of this text to the readers.

D.To warn us of the potential disasters for mankind.

2.What worries us most according to the author？

A.The destruction of our habitat.

B.The rapid progress of species' dying out.

C.The environmental pollution.

D.The imbalance of nature.

3.What can we infer from the third paragraph？

A.Human beings are closely related to nature.

B.Most living things will die out in the future.

C.No forest will exist on the earth in the future.

D.Oxygen will soon disappear on the earth.

4.What does the author intend to do in the last paragraph？

A.To show us what to do to avoid the sixth extinction.

B.To tell us what to do to conserve our environment.

C.To encourage us to save more energy in our life.

D.To explain why we should protect the natural environment.

5.What is the author's attitude towards the mass extinction in this passage？

A.Uninterested. B.Concerned.

C.Skeptical. D.Supportive.

答案：1-5　CBAAB

Step Three：Post-reading

Ⅰ.难句解构

1.These include the third mass extinction，known as the “Great Dying”，which killed 90％ to 96％ of all species.

结构分析：此句为复合句，其中known as the “Great Dying”为动词-ed形式短语作定语，which引导非限制性定语从句。

汉语翻译：这其中包括被称为“大灭绝”的第三次大灭绝，在那期间90％到96％的物种灭亡了。

2.Although it is not unusual for species to die out naturally，the rate at which this is now happening is cause for concern.

结构分析：此句是主从复合句，Although引导让步状语从句，从句中的it是形式主语，动词不定式短语为真正的主语，主句的主干是the rate is cause for concern，at which为“介词＋关系代词”引导的定语从句，修饰先行词rate。

汉语翻译：虽然物种的自然灭绝并不罕见，但现在灭绝发生的速度让人担忧。

Ⅱ.佳句仿写

1.[教材佳句]　 Without forests，we would have no air to breathe，and without clean water we would be unable to survive.(环境描写)

[学后仿写]　夕阳西下的光线洒满了树林，给兴奋的女孩披上银色的外衣。

The light from the sunset showered the woods，blanketing the excited girl in silver color.

2.[教材佳句]　 In short，if we want to survive，we need to stop destroying the planet that we live on and start to protect it.(动作、心理描写)

[学后仿写]　眼睛里闪烁着兴奋，喜悦的泪水顺着她的脸颊流下。

Eyes twinkling with excitement，tears of joy streamed down her cheeks.

Ⅲ.品质升华

　　请将本模块课文内容精准归纳为一篇summary，内容词数控制在150词左右。

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