Band 6.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.5 · Cambridge IELTS 19 · 2026-07-31

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 6.5)

The diagram depicts the process of the production of biofuel which is also known as ethanol. At a glance, the entire process is divided into 8 steps. This process works as a cycle. Because the carbon which came from the exhaustion of fuel will be used in the production of another plantation.

Firstly, the process starts with the plantation of trees. And once the plants grow, the process of harvesting will get started. After harvesting, the plants goes to the factories for to prepare the plants to make cellulose from it. At the forth step, the cellulose from plants has made. Then, cellulose goes for actual processing in labs where sugars will going to be extracted from the cellulose. On a second last step, some microbes will be added into that extracted sugars and then the final product named ethanol or biofuel will be produced. After production, ethanol will be used in vehicles like Cars, Trucks and Air planes. As a result of exhaustion, the carbon dioxide will going to get mixed in environment. Which will be used by the plants as a source of energy.

Overall, the process of plantation, harvesting and making cellulose from plants are steps which requires for more man power in comparison of rest of the steps.

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The response covers the main stages of the ethanol production cycle. However, the description is somewhat simplistic and relies on a step-by-step narrative that lacks analytical depth. While the main features are identified, the summary of the process could be more integrated. The final paragraph makes an unsupported claim about 'man power' which is not present in the provided diagram, representing an external assumption rather than a summary of the given information. To reach a higher band, focus on grouping the stages logically (e.g., cultivation, processing, and usage) rather than listing them sequentially, and ensure all observations are strictly derived from the visual data provided.

Coherence and Cohesion — Band 6.5

The response is organised into paragraphs, and there is a clear attempt to use cohesive devices such as 'Firstly', 'Then', and 'Overall'. However, the flow is occasionally mechanical, and some transitions are slightly awkward, such as 'On a second last step'. The referencing is generally clear, but the logical progression between the stages of the cycle could be smoother. The paragraphing is functional, but the final paragraph is quite brief and does not effectively synthesise the information presented in the body paragraphs. Improving the variety of linking words and ensuring a more sophisticated structure would enhance the overall coherence.

Lexical Resource — Band 6.5

The vocabulary is generally adequate for the task, allowing the reader to follow the process. There are some attempts at topic-specific vocabulary like 'cellulose', 'microbes', and 'extracted'. However, there are instances of imprecise word choice, such as 'exhaustion of fuel' (likely meaning combustion or emission) and 'forth step' (should be 'fourth'). The phrasing is occasionally repetitive, and the range of vocabulary is somewhat limited. To improve, focus on using more precise technical terms related to industrial processes and ensure correct spelling and collocation of words.

Grammatical Range and Accuracy — Band 6.0

The response contains a mix of simple and complex sentence structures. However, there are frequent grammatical errors that, while not impeding communication, are noticeable. Examples include 'the plants goes' (subject-verb agreement), 'for to prepare' (incorrect prepositional phrase), 'sugars will going to be' (incorrect verb tense/form), and 'carbon dioxide will going to get mixed' (awkward construction). Punctuation is generally acceptable, but the control over verb tenses and auxiliary verbs needs significant improvement to achieve a higher band. Focusing on consistent tense usage for process descriptions would be beneficial.

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