Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-02

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 diagram illustrated the procedure about how a biofuel called ethanol is produced by following the simple steps.

Overall, it is evident that the process will take place in a total 7-steps including harvesting to processing, microbes addition and final product. Then used in different kind of vehicles as a fuel and produced carbon dioxide, which can be reused by plants and trees for growth as a source of energy.

Initially, plants and trees grow with the help of energy in form of sunlight and carbon dioxide. These plants and trees harvested by using a tractor and then used for pre processing. Following the flow, on the next stage these output from pre-processing used for cellulose and after that processing procedure completed in lab using chemical products. In this cycle, the next process is sugars then microbes added into sugar for final step. Finally, when microbes added in the sugars then ethanol produced. This final product called biofuel ethanol is then used for various type of vehicle such as a taxi, car, truck and airplanes. These vehicles produced carbon dioxide by using the fuel. This carbon dioxide again works as a energy source for plants and grow. Cycle repeat itself, first this gas used by plants and trees then these go through different procedure and final consumption also produced carbon dioxide which is later used by plants and trees again.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages and identify the important overall feature: ethanol is used by vehicles, and the carbon dioxide released returns to support plant growth. This gives the response a clear overview and addresses the cycle, with relevant details such as harvesting, pre-processing, cellulose, sugars and microbes. Some points are less fully or accurately reported, however. The diagram shows processing but does not indicate that it occurs in a laboratory or uses chemical products, and it depicts a car, truck and aeroplane rather than a taxi. The claim that there are seven steps is also unclear because the process includes more stages. To strengthen the response, describe only what the diagram shows and make the sequence and cycle more precise.

Coherence and Cohesion: Band 6.0

The response has a recognisable structure: an introduction, an overview and a chronological account of the process. Sequencing expressions such as “Initially,” “Following the flow,” and “Finally” help the reader follow the stages. However, cohesion becomes repetitive in the final sentences, where the carbon-dioxide cycle is explained several times, and “then” is used frequently. Some references are also unclear, as in “these output from pre-processing,” which makes the link between stages harder to follow. Group the account into a concise description of plant growth and processing, followed by fuel use and the return of carbon dioxide. Use clearer references and avoid restating the same cycle information.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “ethanol,” which allows you to report the main stages. There is also some attempt at less common wording, such as “procedure” and “consumption.” However, several choices are imprecise or unnatural: “procedure about how” is awkward, “microbes addition” is not the natural form, and “final consumption” does not clearly describe vehicle use. Repetition of “plants and trees,” “process” and “carbon dioxide” also limits flexibility. Aim for accurate process collocations such as “the production process,” “microbes are added,” and “the fuel is used by vehicles,” while varying repeated wording where the meaning remains clear.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and longer sentences, and the sequence is generally understandable. However, errors in sentence structure and verb forms occur often enough to limit clarity. For example, “These plants and trees harvested” needs a passive verb (“are harvested”), while “then used for pre processing” lacks a clear subject. The sentence beginning “Overall, it is evident…” also shifts awkwardly from the process to “Then used,” leaving the subject unclear. There are further problems with articles and agreement in “a energy source” and “various type of vehicle.” Practise forming complete passive clauses for process descriptions and checking each sentence for a clear subject and correctly matched verb. This will make your range of structures more controlled.

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