Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-12

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 graph illustrates how a biofuel called ethanol is produced.

Overall, the whole process contain eight steps, it starts from the plants and trees that are used sunlight as energy source. while it ends with the production of ethanol that is used by vehicles, and it is forward by different steps like cellulose, processing.

At first, the plants and trees contain energy from sunlight for their growth, after that these plants harvested by a tractor, and then step forward to pre-processing where the large plants cut into small pieces by a machine. Moreover, in the process of cellulose large plants routes were removed, and then it goes to a laboratory for processing.

Furthermore, the processed chemical pass to sugars, and there it mixed with sugar and then goes to next step, where microbs added into it and at the end the ethanol is produced, which is used by different types of transporting vehicles as car and truck, it also used for some others things. When it used by vehicles the carbon dioxide is produced, and it again mixed with air and plants and trees used it for their growth.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages from plant growth and harvesting through processing, sugar formation, microbes and ethanol, and you also describe the return of carbon dioxide to the plants. The overview identifies the cycle and the fuel’s use in transport, so the response captures the diagram’s central purpose. However, it says there are “eight steps,” although the diagram presents more stages, and the overview’s description of the ending is unclear: ethanol is produced before it is used by vehicles. Some details are also inaccurate or unsupported, such as saying roots are removed and that the material goes to a laboratory. To strengthen the response, report the labelled stages precisely and distinguish the production sequence from the later transport-and-carbon cycle.

Coherence and Cohesion: Band 6.0

The response has a recognisable overall structure: an introduction and overview are followed by two paragraphs describing the process, with stages generally presented in sequence. Connectors such as “At first,” “after that,” and “Furthermore” help guide the reader. However, some links are mechanical or unclear, particularly “and it is forward by different steps,” and the long final sentence combines sugar processing, ethanol use and carbon recycling without clear boundaries. The overview also says the process ends with ethanol, then mentions vehicle use, which makes the sequence confusing. Use shorter sentences for distinct stages and make references such as “it” explicit so the reader can follow each material through the cycle.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “pre-processing,” “cellulose,” “microbes,” “ethanol” and “carbon dioxide,” which allows the main subject to be understood. There is also some variety in verbs such as “harvested,” “mixed” and “produced.” However, several word choices or collocations are inaccurate or imprecise: “contain energy from sunlight,” “large plants routes,” and “mixed with air” do not clearly describe the diagram. “Different types of transporting vehicles” is also awkward, and “some others things” is vague. Spelling errors such as “microbs” further reduce precision. Aim for standard process collocations, for example “absorb sunlight,” “plant material is processed,” and “vehicles release carbon dioxide,” and check spelling carefully.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and complex sentences, using time clauses and sequencing structures such as “after that” and “when it used by vehicles.” The overall meaning is usually recoverable, but errors in verb forms, agreement, articles and sentence boundaries are persistent. For example, “the whole process contain” needs subject–verb agreement, while “plants and trees that are used sunlight” has an incorrect passive construction. “These plants harvested” is missing an auxiliary, and “it mixed with sugar” also needs a suitable verb form. The overview’s sentence beginning “Overall” joins two independent clauses with a comma. Build accuracy by checking each clause for a subject and correctly formed verb, and use full stops to separate stages when a sentence becomes long.

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