Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-30

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 provided natural diagram illustrates the process of production of ethanol from carbon dioxide.

Overall, it is a step by step process comprising eight stages and involving various tools and infrastructures. The process begins with carbon dioxide and sunlight absorption, and end with the release of carbon di oxide back into the environment,

At the begining of the processe, plants and tree absorb carbon dioxide sunlight from the atmosphare to get energy, which contributes plants and trees to growth. Once they reached maturity, men then harvest by mannually and send to factory for pre-processing. In this stage the plants croshed and make cellulose for further processing in the lab with the help of chemicals.

After physical, the crushed and cellulose with the help of chemicals it turns into suger which is in next step added some microbes to make the final production the ethanol, that is used as a fuel in car, truck, or plane. The vehicales again produced carbon dioxide which is release in environment

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the main cycle and describe the key stages from plant growth and harvesting through processing, sugar production, and ethanol use in transport. The overview also correctly notes that carbon dioxide is released and returned to the plants. These features make the response relevant and broadly complete. However, some details are inaccurate or unclear: the diagram shows harvesting with a tractor, not manual harvesting, and it does not specify chemicals or a laboratory. The account also says there are eight stages, although the process includes more steps, and it does not clearly explain that microbes are added before ethanol is produced. To strengthen the response, report only what the diagram shows and make the recycling link more precise.

Coherence and Cohesion: Band 6.5

The response has a recognisable structure: an introduction and overview are followed by a description of the early and later stages. Sequencing expressions such as “At the beginning,” “Once,” and “In this stage” help the reader follow the process, and the main progression is generally clear. However, the final paragraph contains several stages in one long, difficult-to-follow sentence, particularly the explanation of cellulose, sugars, microbes, and ethanol. Some links between ideas are also unclear, as in “After physical, the crushed and cellulose…” A clearer paragraph break and one sentence for each major phase would improve progression. Use linking words to show sequence and cause accurately rather than relying on a chain of loosely connected clauses.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “pre-processing,” “cellulose,” “microbes,” and “ethanol,” which helps convey the subject. There is also some attempt to vary wording with phrases such as “reached maturity” and “final production.” However, spelling and word-choice errors are noticeable and sometimes make the description harder to understand: “begining,” “processe,” “atmosphare,” “suger,” and “vehicales” are examples. Some combinations are also unnatural, such as “plants croshed” and “added some microbes.” Aim for accurate spelling and standard process collocations, and avoid adding technical terms such as “chemicals” when they are not shown in the diagram. More precise vocabulary would make the account clearer and more natural.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and complex sentences, including a time clause in “Once they reached maturity” and a relative clause in “which contributes plants and trees to growth.” This shows some range, but control is inconsistent, and several sentences contain errors that obscure relationships between stages. For example, “the process begins … and end” has a subject–verb agreement error, while “which contributes plants and trees to growth” is not correctly formed. The final paragraph also has faulty clause construction: “the crushed and cellulose with the help of chemicals it turns into suger.” Work on complete sentence patterns, agreement, and consistent tense when describing a process. Breaking long sentences into shorter, grammatically complete units will help you express the sequence more accurately.

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