Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-25
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)
This diagram illustrates the stages of making biofuel called ethanol.
Overall, ethanol becomes from a sequence process that sated from sunlight and carbon dioxide and furthermore. However, after accomplishment of whole procedure of making biofuel. This ethanol used carbon dioxide into different vehicles which reverses to again getting energy from sunlight.
Firstly, trees and plants get energy from (sunlight and carbon dioxide) and grow after becoming to able of these trees harvested by harvested machine. After cutting these grains processed into a device and become cellulose. Then this cellulose send to a lab for for process and come out in the form of sugars in which some microbes added and then ethanol becomes.
This biofuel (ethanol) uses in different devices such as car, Airplane, and large truck these vehicles release carbon dioxide and this carbon dioxide again uses with sunlight to get energy and start new procedure of producing ethanol again.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The response covers the main stages of the ethanol production cycle, from the growth of plants to the final usage in vehicles. However, the description of the process is somewhat disjointed and lacks clarity in explaining the technical steps, such as the conversion of cellulose to sugar. While the cyclical nature of the process is mentioned, the explanation is confusingly phrased, for example, stating that ethanol 'becomes from a sequence process'. To reach a higher band, you should focus on clearly describing the transformation stages shown in the diagram rather than using vague phrasing.
Coherence and Cohesion — Band 5.0
The essay is organised into paragraphs, which helps the reader follow the structure. However, the use of cohesive devices is often mechanical or inaccurate, such as 'and furthermore' and 'after accomplishment of whole procedure'. The logical flow between sentences is frequently interrupted by awkward phrasing, making it difficult to follow the progression of the cycle. Referencing is also unclear at times, particularly in the second paragraph where the connection between the steps is not well-signposted.
Lexical Resource — Band 5.0
The vocabulary is limited and often imprecise. There are several instances of word-choice errors, such as 'sated' instead of 'started' and 'harvested machine' instead of 'harvesting machinery'. The repetition of basic verbs like 'get' and 'become' restricts the range of the response. To improve, you should focus on using more precise terminology related to industrial processes, such as 'converted', 'processed', or 'utilised', and ensure that words are used in their correct grammatical form.
Grammatical Range and Accuracy — Band 5.0
The response contains frequent grammatical errors that occasionally impede communication. There are issues with subject-verb agreement ('ethanol becomes from'), missing articles, and awkward sentence structures ('this cellulose send to a lab'). While there is an attempt to use complex sentences, they are often poorly constructed and contain errors that affect clarity. The punctuation is generally functional, but the overall control of grammar is weak, preventing the use of a wide range of error-free structures.
See this exact question answered at other band scores — the same prompt compared across bands.
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