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 layout explains how from biofuel, ethanol is produced.

The biofuel production underwent through different stages and ethanol is produced.

Overall, the process start from growing plants and trees and finished at adding microbes into sugar therefore ethanol is produced.

At the initial stage plants and trees are grown as they use carbon dioxide, energy, and sunlight from atmosphere through a process called photosynthesis. then these plants are harvested, After that the formation of ethanol starts to begins called pre processing here the plants and trees are crushed into pieces which release cellulose.

Eventually in the next stage, cellulose underwent through process and converted into sugars and lastly microbes are added to it. consequently, ethanol and in addition carbon dioxide is produced.

Now this Ethanol is used in many vehicles for instance cars, trucks, airplanes and eventually they release carbon dioxide which is mixed with atmosphere and again plants absorb carbon dioxide through photosynthesis.

AI examiner evaluation

Task Achievement / Task Response: Band 7.0

You cover the main stages and the circular nature of the process, from plant growth and harvesting through cellulose, sugars and ethanol, then carbon dioxide returning to support further growth. This gives the reader a clear account of the diagram’s overall sequence. However, the overview is not fully accurate: it says the process finishes with microbes being added, although ethanol is produced afterwards and the cycle continues through transport and carbon dioxide. Some details are also inferred rather than shown, such as plants being “crushed into pieces”; the diagram identifies pre-processing but does not specify this action. To strengthen the response, make the overview describe the complete cycle and report only processes explicitly represented.

Coherence and Cohesion: Band 6.0

The response follows the diagram’s general order, and phrases such as “At the initial stage,” “After that,” and “Eventually” help signal progression. The final sentence also connects fuel use with carbon dioxide returning to plant growth, so the overall arrangement is coherent. However, the paragraphing is limited, and some transitions feel mechanical or are punctuated awkwardly: “then these plants are harvested, After that…” combines stages without a clean sentence boundary. The overview also gives an incomplete endpoint, which weakens the progression. Use a separate overview and group the stages into clear paragraphs, with transitions that show the sequence without repeatedly relying on basic time markers.

Lexical Resource: Band 6.0

You use relevant process vocabulary, including “harvested,” “cellulose,” “sugars,” “microbes,” and “photosynthesis,” which helps communicate the subject. There is also some attempt to vary wording through “initial stage” and “consequently.” However, several expressions are imprecise or unnatural, such as “underwent through different stages,” “the formation of ethanol starts to begins,” and “mixed with atmosphere.” Repetition of “plants and trees” and “carbon dioxide” is understandable but could be managed with accurate alternatives where appropriate. Aim for standard process collocations and avoid adding technical detail that the diagram does not show; this would make the vocabulary more precise and natural.

Grammatical Range and Accuracy: Band 5.0

The response attempts both simple and complex sentences, including a clause explaining that plants use carbon dioxide and sunlight and a final sentence linking transport with the return of carbon dioxide. Meaning is generally recoverable, but errors occur in verb forms, agreement, sentence boundaries and punctuation. Examples include “The process start” instead of “starts,” “underwent through,” and the faulty construction “starts to begins.” The overview’s “finished at adding” is also grammatically awkward, while “consequently, ethanol and in addition carbon dioxide is produced” has unclear structure and agreement. Improve control by using consistent present simple for process descriptions, checking subject–verb agreement, and separating clauses with appropriate punctuation.

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