Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-29

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 6.0)

The given picture illustrates how production of biofuel named ethanol takes place. Ethanol production is seem to be occur in cycle where byproducts make ethanol and then release into air and cycle repeats.

Overall, the manufacturing process takes place in five steps starting from harvesting greenery to make fuel which runs a lot of vehicles,buses and aeroplanes.

Process starts when plants and trees grow in size by absorbing sunlight and CO2 from environment and when these are larger enough, these are cutdown and their raw material undergoes preprocessing step where larger particles are crushed into cellulose.

Furthermore, cellulose is transfered to processing unit where it is converted into sugars. The ethanol is near to ready by adding microbes. By adding these tiny organisms ethanol is ready to run as fuel in cars , trucks and aeoplanes . When these vehicles run their engine emits smoke containing carbon dioxide which is reeased into atmoshere and is ready to reuse by plants and cycle repeats.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main cycle, including plant growth, harvesting, conversion to cellulose and sugars, the addition of microbes, and carbon dioxide returning from transport to the plants. The overview also recognises that production is cyclical. These features are relevant and mostly accurate, supporting a strong account of the task. However, the claim that the process has “five steps” is inaccurate, and the diagram shows ethanol being produced before it is used by cars, trucks and aircraft; your wording that it is “near to ready” after processing and microbes makes this sequence less clear. The description of pre-processing as crushing particles is not specified in the diagram. To strengthen the response further, report the stages precisely and avoid adding unsupported process details.

Coherence and Cohesion: Band 6.0

The response has a recognisable structure: an introduction and overview are followed by the stages in roughly chronological order, with the final sentence returning to the cycle. Connectors such as “Furthermore” and “When these vehicles run” help signal progression. However, the overview’s “five steps” conflicts with the longer sequence that follows, and some references are unclear: “these” could refer to plants, trees or their raw material. The long final sentence also combines fuel use, emissions and the return to plant growth, making the cycle harder to follow. Use clearer stage-by-stage sentences and explicit references such as “the harvested plant material” to make cohesion less mechanical and more precise.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “cellulose,” “processing,” “sugars,” “microbes” and “carbon dioxide,” which allows the reader to understand the main stages. There is also some attempt at more specific language, such as “raw material” and “manufacturing process.” However, several word choices and collocations are inaccurate or informal: “production … named ethanol,” “runs a lot of vehicles,” and “tiny organisms” are less suitable for a formal process description. Spelling errors such as “transfered,” “reeased” and “atmoshere” are noticeable. Aim for precise process verbs and standard spelling, and use “fuel” or “powers” rather than “runs” when describing vehicle use.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and complex sentences, including a time clause beginning “When these vehicles run” and a relative clause in “which runs a lot of vehicles.” This shows some range, but control is inconsistent. Errors include “is seem to be occur,” “where byproducts make ethanol,” “these are larger enough,” and “cellulose is transfered,” where verb forms, agreement or sentence construction are faulty. Some sentences also run together, particularly the final one, and spacing around commas is inconsistent. These problems sometimes make the sequence difficult to interpret, although the overall meaning remains recoverable. Practise accurate passive forms for process descriptions—for example, “is converted”—and divide long clauses into complete, clearly punctuated sentences.

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