Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-17
IELTS Writing Task 1 question
The diagram below shows how a biofuel called ethanol is produced.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Student answer (Band 5.0)
The given below diagram shows how a biofuel called ethanol is produced.
Overall, biofuel production with how ethanol is made and its production is also shown in the given diagram.
To begin with, energy from sunlight and carbon dioxide, then plants and trees grow and harvesting it. it is now pre processing for the further requirements. So these are methods it is using to produce biofuel.
Then cellulose is processing into sugars and add the microbes into it to setup. Finally the production of ethanol is finished. Plane, car and trucks have carbon dioxide from it biofuel is produced. So this is the production of biofuel, how the ethanol is made.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 4.0
The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the score. The summary is very brief and lacks a clear overview of the process. While the student attempts to describe the stages, the information is fragmented and fails to report the main features or make meaningful comparisons between the steps. The description of the process is incomplete, and the lack of detail means the task is only partially addressed. To improve, the student must describe each stage of the diagram in detail, ensuring all steps are covered and the relationship between them is clearly explained.
Coherence and Cohesion — Band 5.0
The response lacks a logical flow. While there is an attempt at paragraphing, the ideas within the paragraphs are disjointed and repetitive. The use of cohesive devices is very limited and often mechanical, such as the repetitive use of 'Then' and 'So'. The progression of information is unclear, making it difficult for the reader to follow the sequence of the biofuel production process. To improve, the student should use a wider range of linking words and ensure that each paragraph has a clear focus, connecting sentences logically to guide the reader through the process.
Lexical Resource — Band 5.0
The vocabulary used is basic and repetitive, often relying on simple verbs like 'made' or 'produced'. There is little attempt to use topic-specific vocabulary related to industrial processes or chemical production. Phrases like 'setup' and 'further requirements' are vague and do not accurately describe the technical stages shown in the diagram. To achieve a higher band, the student needs to incorporate more precise terminology related to the process, such as 'fermentation', 'conversion', or 'raw materials', and avoid repeating the same words throughout the text.
Grammatical Range and Accuracy — Band 5.0
The response contains frequent grammatical errors, including issues with subject-verb agreement ('plants and trees grow and harvesting it') and sentence structure. Many sentences are fragmented or poorly constructed, such as 'Plane, car and trucks have carbon dioxide from it biofuel is produced.' There is a lack of complex sentence structures, and the control over basic grammar is inconsistent. To improve, the student should focus on writing complete, grammatically correct sentences and practice using a variety of structures, such as passive voice, which is essential for describing processes.
See this exact question answered at other band scores — the same prompt compared across bands.
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