Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-27

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 illustrates how diverse steps make biofuel which is known as ethanol.

Overall, the procedure start and end with carbon dioxide, from plants taking enery mixed of sunlight and carbon dioxide. Go through a long procces of harvesting to pre-processing than cellulose. However, that was not the final step, the cellulose go to the factories and throughing the procedure it turn into suger form. After that they add microbes and make ethanol or biofuel.

The steps began from the carbon and after dispose ethanol to viechels thay also dispose carbon to air. So it is really clear that the proccers is wui8te long however, it helps to the viachels for fuel. And there has the main ingredients is carbon dioxide, which is leading the whole procces.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify the subject as ethanol production and give a basic account of the plant-growth, harvesting, pre-processing, cellulose, processing, sugar and microbe stages. You also recognise that carbon dioxide is involved at the beginning and returns after ethanol is used. However, the account is partial: it omits the three transport modes and does not clearly explain that carbon dioxide from their use cycles back to support plant growth. The overview is unclear, especially “the procedure start and end with carbon dioxide,” and some details are inaccurate or vague. The response is also 23 words below the required minimum, limiting the space available to report the main features. Include the full cycle and explain the stages more precisely.

Coherence and Cohesion: Band 4.5

There is a basic attempt to organise the response, beginning with an overview and then describing stages, and some sequencing language such as “After that” helps show order. However, progression is difficult to follow because the overview and process details are mixed together, and the final paragraph repeats the carbon-dioxide point rather than completing the sequence clearly. Connections such as “However” do not express a clear contrast, while “So” introduces an informal conclusion. Several references are also unclear, including “that was not the final step” and “they,” whose referents are not precise. Use a clear overview followed by a chronological account, with each stage linked explicitly to the next.

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “ethanol,” which allows the reader to recognise the main stages. However, the range is limited and several word choices or spellings make the description difficult to understand: “enery,” “procces,” “suger,” “viechels” and “wui8te” are noticeable errors. Phrases such as “dispose ethanol” and “suger form” are also unsuitable for describing fuel production. Aim for accurate process collocations, for example, “ethanol is used as fuel” and “the sugars are converted into ethanol.” Proofread technical terms carefully and avoid informal or unclear wording such as “really clear.”

Grammatical Range and Accuracy: Band 4.5

The response attempts both simple and longer sentences, but control is inconsistent, and errors frequently affect clarity. For example, “the procedure start and end” has incorrect subject–verb agreement, while “the cellulose go to the factories” has the same problem and an unclear sentence structure. Verb forms are also faulty in “throughing the procedure it turn into suger form,” and the opening phrase “from plants taking” does not form a complete, accurate clause. Punctuation and sentence boundaries are weak in the final paragraph, where several ideas run together. Build accurate simple sentences first, then connect them with controlled clauses: for instance, “After harvesting, the plants are pre-processed to produce cellulose.”

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