Band 6.0 IELTS Writing Task 1 Model Answer

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

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 process chart illustrates the cycle of making a biofuel called ethanol.

Overall, it is evident that the process is divided into eight stages, which began with the resouces used for plants growth and ends with uses of ethanol who realsed the carbon dioxide in result.

To begin with, the resouces such as energy, sunlight and carbondioxide are used for the growth of plants and tree and will be harvested when they are fully grown. Then, harvested plants are underwent for pre-processing stage. Later, the celluose is separted from the plants following with processing phase.

Moreover, processing helps in extraction of sugars from the cellulose. After that, some microbes are addded into the refined sugar to form ethanol. Ethanol is used as fuel for vechiles such as cars, trucks and airoplans. In result, they produce the carbon dioxide and it again helps in plants growth and the viscous cycle is running.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages from plant growth and harvesting through processing, sugar conversion, ethanol use and the return of carbon dioxide. The overview also identifies the cycle, which is an important feature, and the transport examples (cars, trucks and aeroplanes) are accurately included. This gives the response a clear account of the process. However, the overview says there are “eight stages,” although the diagram presents a longer sequence, and the description of cellulose being “separated” is not explicit in the visual: it shows pre-processing leading to cellulose. Some stages and links are compressed, so the account is not equally precise throughout. A more exact overview and clearer reporting of the diagram’s sequence would strengthen the response further.

Coherence and Cohesion: Band 6.5

The response follows the process in a sensible order, moving from plant growth to harvesting, processing, ethanol production and carbon-dioxide release. The opening overview and the sequencing phrases “To begin with,” “Then,” “Later” and “After that” help the reader follow the cycle. The paragraphing is also appropriate for a short process description. At times, however, the links feel mechanical, and some references are unclear: “they produce the carbon dioxide” requires the reader to infer that “they” means the vehicles. The final sentence also combines the emissions and the cycle’s return to plant growth without a clear transition. Use a few more precise links and explicit references to make the progression smoother.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “pre-processing,” “cellulose,” “processing,” “sugars” and “microbes,” and you distinguish the stages rather than relying entirely on general words. However, spelling and word-choice errors are noticeable, including “resouces,” “celluose,” “separted,” “vechiles” and “airoplans.” Some combinations are also unnatural, such as “plants growth,” “underwent for pre-processing” and “viscous cycle.” These choices sometimes make the description less clear or less natural, even though the intended meaning is usually recoverable. Check spelling carefully and learn common process collocations, such as “plants grow,” “are harvested,” and “a continuous cycle,” to improve precision and control.

Grammatical Range and Accuracy: Band 5.5

You attempt a mixture of simple and more complex sentences, including the overview clause “which began with…” and the sequence describing how sugars are extracted and microbes are added. The overall meaning remains understandable, but errors in verb forms, agreement and sentence construction are evident. For example, “plants and tree … will be harvested” has a number mismatch and an awkward tense shift, while “harvested plants are underwent” uses an incorrect passive form. “Some microbes are addded” also needs the past participle “added.” The sentence beginning “Overall” has a faulty relative construction, and the final sentence joins ideas awkwardly. Practise accurate passive forms and consistent present-tense descriptions of processes.

See this exact question answered at other band scores. The same prompt compared across bands.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.