Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-25

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 5.0)

The diagram illsutrates the process of how biofuel called ethanol is produced.

overall biofuel production go through multiple process starting growing plants and tree to end up making ethanol.other process play crucial part of creating it .

firstly plants and tree grow in forests then take energy through sunlight and carbondioxide after that farmers start harvesting and take it for pre-processing and the celluose melt it for labortary where it taste and it come out in a shape of sugars.Then microbes added to end ethanol produce. Then its being shipled through cars,aeroplane and truck the whole process repeat again

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

You identify the subject as ethanol production and mention several relevant stages, including plant growth, harvesting, pre-processing, sugars, microbes and transport. However, the account is incomplete and contains important inaccuracies: the diagram shows sunlight and carbon dioxide supporting plant growth, not plants taking energy after they have grown; cellulose is produced before processing, rather than being melted or tested in a laboratory. The overview is vague and does not explain the cycle in which carbon dioxide from transport returns to the plants. The response also falls 51 words short of the required minimum, limiting the detail you can provide. To improve, describe the stages in order, accurately report the carbon-dioxide loop, and include a clear overview of the cycle.

Coherence and Cohesion: Band 5.0

There is a basic sequence, signalled by “firstly” and “after that,” and the response moves from plant growth towards ethanol and transport. This gives the reader some sense of the process. However, nearly all the information is compressed into one paragraph, and the long chain of stages is difficult to follow. The transition “Then its being shipled” is unclear, while “the whole process repeat again” does not explain how the cycle returns to plant growth. Some links between stages are also missing or confusing. Use separate paragraphs for an overview and the main stages, and connect each step with precise sequencing language such as “next,” “following this,” and “finally.”

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “harvesting,” “pre-processing,” “celluose” (cellulose), “microbes” and “ethanol,” so the topic is generally recognisable. However, the range is limited, and several inaccurate or misspelled choices make parts of the description difficult to understand. For example, “it taste” and “shipled” do not clearly convey the intended stages, and “melt it for labortary” is not an accurate description of the diagram. “Carbondioxide” should be written as “carbon dioxide.” Aim for precise process terms and standard spelling, and avoid adding unsupported details. Practising collocations such as “is converted into” and “is used as fuel” would help make the account clearer and more appropriate for an academic report.

Grammatical Range and Accuracy: Band 4.5

The response attempts to describe a sequence using connected clauses, for example, “after that farmers start harvesting,” but sentence structures are very limited and errors occur frequently. Subject–verb agreement is missing in “biofuel production go” and “other process play”; articles and plurals are also inconsistent in “plants and tree.” Several sentences run together without appropriate full stops, and “Then microbes added to end ethanol produce” lacks the grammatical structure needed to express the process clearly. Use present simple passive forms for stages, such as “the plants are harvested” and “microbes are added,” and check agreement, articles and sentence boundaries. Short, accurate sentences would be a useful first step before attempting longer structures.

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