Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-15
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 diagram illustrates the process of how ethanol is called, from plants and trees to ethanol.
Overall, These process have a several type of stages to include, and some of these stages required much time to complete the process.
Plants the tree in vast area and wait for growing him. Once when they growed the trees consumes different type of energy such as carbon dioxide and sunlight. Then using the tractor or etc machines cut that trees and that process called harvesting. And then we start pre-processing of the ethanol.
The machine crush that harvest trees in cellulose. In next stage we processing cellulose with chemicals and when the process complete then create sugars type structure after processing and in we added microbes and the final produced biofuel called ethanol. And this ethanol used in car, truck, and airplanes. These vehicles release carbon dioxide and these carbon dioxide collect trees as energy and these cycle continue run.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 4.5 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The response identifies the main stages of the ethanol production process, such as harvesting, pre-processing, and the addition of microbes. However, the description is somewhat superficial and lacks the precision required for a higher band. For instance, the transition from 'cellulose' to 'sugars' is described vaguely, and the technical aspects of the diagram are not fully explained. While the overview attempts to summarize the process, it is grammatically weak and lacks clarity. To improve, you should focus on accurately describing the sequence of events and using more precise terminology to explain the chemical or mechanical transformations shown in the diagram.
Coherence and Cohesion — Band 5.0
The essay is organized into paragraphs, which helps the reader follow the general flow. However, the use of cohesive devices is often mechanical or inaccurate, such as the repetitive use of 'and' to link ideas. Referencing is also problematic; for example, the phrase 'these cycle continue run' is unclear and lacks proper grammatical connection to the previous sentence. The progression of ideas is sometimes disjointed, making it difficult to follow the logical sequence of the production process. Improving the use of transition signals (e.g., 'subsequently', 'following this', 'as a result') would significantly enhance the flow of your writing.
Lexical Resource — Band 5.0
The vocabulary is limited and often repetitive, relying on basic terms like 'things', 'machines', and 'process'. There are several instances of word-choice errors, such as 'growing him' (referring to trees) and 'sugars type structure'. The range of vocabulary is insufficient to describe the technical process with precision. To reach a higher band, you need to incorporate more specific terminology related to industrial processes, such as 'cultivation', 'fermentation', 'conversion', or 'by-products', and ensure that words are used in their correct collocations.
Grammatical Range and Accuracy — Band 4.5
The response contains frequent grammatical errors that occasionally impede communication. There are consistent issues with subject-verb agreement (e.g., 'These process have', 'trees consumes'), verb tense consistency (e.g., 'they growed'), and sentence structure (e.g., 'Plants the tree in vast area'). The range of structures is limited, consisting mostly of simple sentences with some errors in basic syntax. To improve, focus on mastering subject-verb agreement, consistent tense usage for describing processes, and the correct use of articles and prepositions.
See this exact question answered at other band scores — the same prompt compared across bands.
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