【高中英语这样学】【回归课本】外研社|选修二|Unit 5: A delicate world|语法&口语和写作

学习重点

Ø词汇学习【高中英语这样学】【回归课本】外研社｜选修二｜Unit 5: A delicate world｜词汇学习

Ø语法：It as an empty object

Ø口语&写作：Draft a lecture & Share your understanding of a quote

语法： it 作形式宾语（it as an empty object）

✅ 核心语法点：it 作形式宾语

🔹基本结构

主语 + 谓语动词 + it + 宾语补足语(adj./n.) + 真正宾语(to do / that从句)

it 只是形式上的宾语，没有实际含义，用来占位；真正的宾语后置（太长，放在后面避免句子头重脚轻）

✅ 常用动词：think, find, feel, consider, make, believe 等

✅ 宾补：形容词 / 名词

✅ 真正宾语：不定式 to do / that从句

👉 公式：S + think/find/feel/consider + it + adj./n. + to do / that从句

🔹例句拆解

No visitor would think it surprising that the island is a UNESCO World Heritage Site.

- it = 形式宾语

- surprising（形容词）= 宾语补足语

- that从句 = 真正宾语

👉 翻译：没有游客会觉得这座岛是联合国教科文组织世界遗产这件事很令人惊讶。

Experts felt it necessary to come up with a plan to remove all the rabbits from the island.

- it = 形式宾语

- necessary（形容词）= 宾补

- to come up with…不定式 = 真正宾语

👉 翻译：专家们认为有必要想出一个方案，把岛上所有兔子清除掉。

📌 改写句子（用it作形式宾语）

1.many people think keeping this turtle as a pet is a good idea.

✅改写：many people think it a good idea to keep this turtle as a pet.

2.some owners believe to release them into the wild is no big issue.

✅改写：some owners believe it no big issue to release them into the wild.

3.people have found to release these turtles into the wild is a threat to other species.

✅改写：people have found it a threat to other species to release these turtles into the wild.

4.Experts consider owners keeping their pets in an enclosed area important.

✅改写：Experts consider it important for owners to keep their pets in an enclosed area.

📌 塞罕坝写作范文（it形式宾语）

提示词：breakthrough, impossible, plant trees, transform

范文1（简单版）

I think it a great breakthrough to transform a deserted land into a thick forest. In the 1960s, people thought it impossible to plant trees on the barren land. But now, Saihanba is a beautiful national forest park. Many people find it amazing to see such great changes.

范文2（高分版）

I think it a huge breakthrough to transform a wasteland into a lively forest. Back in the 1960s, local people considered it unrealistic to grow trees on the bare land. However, after decades of hard work, Saihanba has changed completely. Visitors find it unbelievable to see the blue lakes and vast green fields here.

✅可用句型清单

- think it a breakthrough to do… 认为做……是一项突破

- think it impossible to do… 认为做……不可能

- find it likely that … 发现……很有可能

- consider it unrealistic to do… 认为做……不现实

📌 拓展写作：描述身边地方的变化

话题：我的家乡

Great changes have taken place in my hometown over the past 20 years. People once thought it impossible to build wide roads in this mountain village. Now we find it convenient to travel in and out of the town. I consider it our duty to protect the beautiful natural environment here.

📝✅高考写作加分句（it形式宾语，直接背）

1.We think it vital to protect endangered animals.

我们认为保护濒危动物至关重要。

2.Many people find it amazing that humans can change nature.

很多人惊叹人类可以改造自然。

3.I consider it a great honour to take part in this activity.

我认为参加这次活动是莫大的荣幸。

💡易混辨析（很多高中生错在这里）

❌错：I think it is important to protect wildlife.（宾语从句，it是从句主语，不是形式宾语）

✅对：I think it important to protect wildlife.（it形式宾语，无is，本单元语法！）

关键点：it作形式宾语的句子，it后面不加be动词！

📄专项练习题

一、单项选择（10题）

1.I think ______ necessary to learn a second foreign language.

A. that B. it  C. this  D. one

2.We consider ______ our duty to help people in need.

A. it B. that  C. this  D. its

3.The experts found ______ surprising that the project was finished so fast.

A. this B. that  C. it  D. one

4.People feel ______ important to plant more trees to fight sandstorms.

A. that B. it  C. its  D. this

5.The government made ______ a rule to protect all the wild animals in this area.

A. it B. that  C. this  D. one

6.Many students think ______ no use memorizing words without using them.

A. that B. it  C. this  D. its

7.I believe ______ likely that we will achieve our goal in the near future.

A. it B. that  C. this  D. one

8.The old man found ______ pleasant to sit by the lake and enjoy the sunset.

A. that B. it  C. this  D. its

9.Do you consider ______ a waste of time to spend too much time on short videos?

A. it B. that  C. this  D. one

10.We all thought ______ unbelievable that such a small village could become a famous tourist attraction.

A. this B. that  C. it  D. its

二、句型改写（5题，用it作形式宾语改写句子）

11.To keep the balance of nature is very important. (We consider…)

12.That he can turn the desert into green land is possible. (We think…)

13.To protect the local ecosystem is our responsibility. (We feel…)

14.To remove the harmful species from the island is a great challenge. (Experts think…)

15.That Saihanba can become a beautiful forest park is amazing. (Visitors find…)

✅参考答案 + 简要解析

一、单选

1.B  解析：think it + adj. + to do 认为做某事很……

2.A  解析：consider it + n. + to do，it是形式宾语，our duty名词作宾补

3.C  解析：find it + adj. + that从句

4.B  解析：feel it important to do… 觉得做……很重要

5.A  解析：make it a rule to do… 将……定为一项规定（固定高分句型）

6.B  解析：think it no use doing 认为做……没用（固定搭配）

7.A  解析：believe it likely that… 认为……很有可能

8.B  解析：find it pleasant to do… 发现做……令人愉悦

9.A  解析：consider it a waste of time to do… 认为做某事浪费时间

10.C 解析：thought it unbelievable that… 认为……难以置信

二、句型改写

11.We consider it very important to keep the balance of nature.

12.We think it possible that he can turn the desert into green land.

13.We feel it our responsibility to protect the local ecosystem.

14.Experts think it a great challenge to remove the harmful species from the island.

15.Visitors find it amazing that Saihanba can become a beautiful forest park.

口语&写作：Draft a lecture & Share your understanding of a quote

📖阅读理解

原文

If you haven’t already heard of Fanjing Mountain, you soon will! A “must” for anyone visiting Guizhou Province, Fanjing Mountain has now been added to the UNESCO World Heritage List, bringing the total number of UNESCO sites in China to 53. The main reason for its inclusion is its biological diversity, with approximately 50 endangered plant and animal species found in its protected area. One of the first national nature reserves in China, Fanjing Mountain represents one of the country’s greatest achievements in environmental protection. It is also renowned for its breathtaking scenery as a summer resort.

Q1

Where is Fanjing Mountain? Why is it significant?

✅Answer：

Fanjing Mountain lies in Guizhou Province.

It is significant because it is one of China’s earliest national nature reserves and stands for one of the country’s greatest achievements in environmental protection. Besides, it enjoys amazing natural scenery and is a popular summer resort.

Q2

Why was Fanjing Mountain selected for inclusion in the UNESCO World Heritage List?

✅Answer：

The main reason is its rich biological diversity. Around 50 endangered plant and animal species live within its protected area.

📝演讲稿大纲填写（Outline）

Opening:

1.greeting：Good morning, dear teachers and friends!

2.introduction to the topic：Today my lecture is about Fanjing Mountain, a newly‑added UNESCO World Heritage Site in Guizhou Province.

Reason for selection:

It was added to the World Heritage List mainly because of its outstanding biological diversity. Nearly 50 endangered plant and animal species live in this protected reserve.

Other information:

1.It is one of China’s first national nature reserves and a great achievement of China’s environmental protection.

2.It is famous for its breathtaking natural scenery and it is a well‑known summer resort.

Conclusion:

Fanjing Mountain is a precious natural treasure. It shows the success of wildlife protection. We should value and protect it.

Q&A:

Thank you for listening. Any questions?

✨ 完整演讲稿范文

Lecture: Fanjing Mountain

Good morning, dear teachers and classmates!

Have you heard of Fanjing Mountain? Today I’d like to introduce this amazing natural heritage site to you. It is located in Guizhou Province. Recently, it was added to the UNESCO World Heritage List, and the number of China’s UNESCO sites has reached 53.

Fanjing Mountain won this honour mostly for its rich biological diversity. There are about 50 endangered plant and animal species living safely in its protected area. As one of China’s first national nature reserves, Fanjing Mountain is one of our country’s greatest achievements in environmental protection. Apart from its valuable wildlife, it is also famous for its breathtaking scenery and serves as a popular summer resort.

Fanjing Mountain is a great example of environmental protection. It reminds us that it is important to protect biodiversity.

Thank you for your listening. Are there any questions?

✨作文加分句型 

- We find it meaningful to protect such valuable natural sites.

- We think it our duty to preserve biodiversity for future generations.

🌿 Presenting ideas：Share your understanding of a quote

Clear Waters and Lush Mountains Are as Valuable as Gold and Silver

绿水青山就是金山银山

✅思考题

1.What is your understanding of “clear waters and lush mountains” and “gold and silver”?

“Clear waters and lush mountains” refer to a beautiful, healthy natural environment with clean water and thick forests. “Gold and silver” stand for wealth and economic benefits.

2.What message is conveyed by the quote?

Good ecology is a priceless treasure. A beautiful natural environment can bring long‑term economic benefits. Economic development should not be achieved at the cost of destroying nature. We should stick to green development.

✅模板

My understanding:

Good natural environment is more precious than money. We cannot develop the economy by polluting or destroying nature. Green environment can bring lasting wealth.

My example(s):

✅Example1: Saihanba. People turned wasteland into forest. Tourism develops and local people get income.

✅Example2: Fanjing Mountain. Well‑protected biodiversity attracts tourists and helps the local economy.

Conclusion:

Only when we protect nature well can we get long‑term development. Man and nature should live in harmony.

✅3. 完整短篇演讲稿 

Clear Waters and Lush Mountains Are as Valuable as Gold and Silver

Dear classmates,

Today I’d like to share my ideas about the famous quote: Clear waters and lush mountains are as valuable as gold and silver.

In my opinion, clear waters and green mountains mean a healthy ecosystem. Gold and silver refer to economic gains. The quote tells us that a good natural environment is our most precious wealth. We should never damage nature just for short‑term profit.

Saihanba and Fanjing Mountain are perfect examples. After years of environmental protection, they have become famous tourist attractions. Local people benefit a lot from the well‑protected natural scenery.

Nature gives us clean air, fresh water and rich wildlife. It is our duty to protect the ecosystem. If we protect nature, nature will reward us.

Thank you!

📌 写作素材库

✅核心单词

biodiversity n. 生物多样性

endangered adj. 濒危的

conservation n. 保护

habitat n. 栖息地

environmental protection 环境保护

breathtaking scenery 令人惊叹的景色

✅万能句型

1.Today I’d like to introduce… to you. 今天我想向大家介绍……

2.The main reason for … is … ……最主要的原因是……

3.It reminds us that … 这提醒我们……

4.We think it vital to protect … 我们认为保护……至关重要（it形式宾语！本单元语法）

5.Man should live in harmony with nature. 人与自然和谐共生