In the IELTS Writing Task 2 exam, the topic of Environment & Global Issues is always a major challenge because it requires candidates to have a solid foundation of social knowledge and multi-dimensional critical thinking. Today, we are going to tackle a highly current and topical exam question:
Prompt: Fossil fuels are the main source of energy worldwide. Some people believe they should be replaced entirely by renewable energy. To what extent do you agree or disagree?
Many test-takers face difficulties balancing environmental protection and economic interests when dealing with this topic, often resulting in impractical arguments. The article below, professionally reviewed by Ms. Lương Thảo Nhi (an 8.0 IELTS instructor at ECE), provides you with a complete framework of ideas, advanced vocabulary sets, and a model essay to help you confidently handle this task type.
Overview of Fossil Fuel Essay Types
The topic of fossil fuels typically revolves around human reliance on energy, environmental impacts (climate change), and alternative solutions. Below are the common question types you might encounter:
| Essay Type | Typical Prompt Example |
| Opinion Essay | Fossil fuels are the main source of energy… Should they be replaced completely? To what extent do you agree or disagree? |
| Discussion Essay | Some think fossil fuels are necessary for economic growth, while others believe they should be banned. Discuss both views. |
| Problem / Solution | The overuse of fossil fuels is causing environmental damage. What problems does this cause and what solutions can be taken? |
| Cause / Effect | What are the causes and effects of the continued reliance on fossil fuels? |
Vocabulary & Idea Bank for Fossil Fuels
To construct persuasive arguments, you should categorize your vocabulary into three main thematic streams: Environmental Impacts, Economic Benefits, and Energy Solutions.
Environmental Impacts
| Advanced Vocabulary | Vietnamese Meaning | Example in Context |
| Carbon emissions | Khí thải carbon | The excessive use of fossil fuels significantly increases carbon emissions. |
| Greenhouse gases | Khí nhà kính | Burning coal releases vast amounts of greenhouse gases. |
| Air pollution | Ô nhiễm không khí | Vehicle exhaust is a major contributor to urban air pollution. |
| To accelerate climate change | Làm trầm trọng / Đẩy nhanh biến đổi khí hậu | This phenomenon accelerates climate change. |
Economic Benefits
| Advanced Vocabulary | Vietnamese Meaning | Example in Context |
| Economic growth | Tăng trưởng kinh tế | Developing countries rely on fossil fuels for economic growth. |
| Energy demand | Nhu cầu năng lượng | To meet the rising global energy demand. |
| Industrial development | Phát triển công nghiệp | It supports industrial development in many nations. |
| Cost-effective | Tiết kiệm chi phí / Hiệu quả kinh tế | Fossil fuels remain a cost-effective energy source. |
Solutions & Alternatives
| Advanced Vocabulary | Vietnamese Meaning | Example in Context |
| Renewable energy | Năng lượng tái tạo (gió, mặt trời…) | Governments should invest heavily in renewable energy. |
| Sustainable development | Phát triển bền vững | A crucial step towards sustainable development. |
| To reduce dependency on | Giảm sự phụ thuộc vào | We must reduce our dependency on imported oil. |
| Energy-efficient technologies | Công nghệ tiết kiệm năng lượng | Adopting energy-efficient technologies is highly recommended. |
Prompt Analysis & Strategic Outline
Opinion Essay Prompt Analysis:
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Topic: Fossil fuels vs. Renewable energy.
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Task: Agree / Disagree (Should fossil fuels be completely replaced?).
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Strategy: Adopt a balanced view. Affirm that transitioning to clean energy is necessary, but an immediate and total replacement is currently unfeasible due to economic barriers.
Detailed Outline:
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Introduction: Paraphrase the prompt. State a clear position: strongly support the transition to clean energy, but a complete and immediate replacement is unrealistic.
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Body Paragraph 1 (Arguments for replacement): Devastating environmental impacts (greenhouse gas emissions, climate change). Emphasize that renewable energy is far more sustainable and environmentally friendly.
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Body Paragraph 2 (Arguments against total replacement): Heavy reliance of developing countries on fossil fuels to sustain economic growth. The infrastructural investment costs for renewables are prohibitively high, and an abrupt shift would undermine economic stability.
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Conclusion: Restate the position. Propose a practical roadmap: a gradual transition combined with a balanced mix of both energy sources.
IELTS Writing Task 2 Model Essay
The continued reliance on fossil fuels as the primary global energy source has sparked considerable debate, particularly regarding whether they should be entirely replaced by renewable alternatives. While I strongly support the transition to cleaner energy, I believe that a complete replacement is not immediately feasible.
On the one hand, replacing fossil fuels is essential due to their detrimental environmental impact. The burning of coal, oil, and gas releases vast amounts of greenhouse gases, which significantly contribute to climate change and air pollution. Renewable energy sources such as solar and wind power, by contrast, are far more sustainable and environmentally friendly. Transitioning to these alternatives would not only reduce carbon emissions but also promote long-term ecological balance.
On the other hand, it is unrealistic to expect a complete and immediate shift away from fossil fuels. Many countries, particularly developing ones, heavily depend on fossil fuels to support economic growth and meet rising energy demands. Renewable energy infrastructure often requires substantial investment and advanced technology, which may not be readily available. Consequently, a sudden transition could disrupt industries and negatively impact economic stability.
In conclusion, although replacing fossil fuels with renewable energy is a necessary goal for environmental sustainability, it should be approached gradually. A balanced strategy that combines reduced fossil fuel consumption with increased investment in renewable energy is the most practical solution.
In-Depth Vocabulary Analysis from the Model Essay
To make your arguments sharper, Ms. Thảo Nhi has skillfully integrated the following academic phrases into the model essay. Be sure to save them for your own practice:
| Academic Phrase | Vietnamese Meaning |
| Reliance on | Sự phụ thuộc vào |
| Sparked considerable debate | Gây ra cuộc tranh luận đáng kể |
| Immediately feasible | Khả thi ngay lập tức |
| Detrimental environmental impact | Tác động môi trường có hại/tàn phá |
| Long-term ecological balance | Cân bằng sinh thái dài hạn |
| Unrealistic to expect | Không thực tế khi kỳ vọng rằng |
| Immediate shift away from | Sự chuyển dịch ngay lập tức khỏi… |
| Substantial investment | Khoản đầu tư đáng kể/khổng lồ |
| Disrupt industries | Làm gián đoạn/đảo lộn các ngành công nghiệp |
| Economic stability | Sự ổn định kinh tế |
| Environmental sustainability | Tính bền vững của môi trường |
| Approached gradually | Được tiếp cận/thực hiện một cách từ từ, dần dần |
In summary, Fossil Fuels is a global topic that requires candidates to apply multi-dimensional critical thinking regarding both economic and environmental aspects. Rather than making one-sided claims, adopting a balanced view combined with a rich technical vocabulary will maximize the persuasiveness of your essay. Follow Ms. Thảo Nhi’s outline to practice writing on your own and sharpen your argumentative skills. Wishing you effective preparation with ECE!
Khai giảng Khóa học Hè cực HOT.
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