Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-24

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 illustrate the process of biofuel how to made ethanol.

Overall, it is clearly seen that there are several stages to made ethanol the initial step is Plants and trees grow and the least step was Ethanol.

Fetching into detail, the first step start with plants and trees grow when full trees fully grown then it harvesting the trees. While,it converted into pre processing to cut into small particle made cellulose particles, meanwhile the process was started with the assist of cellulose.

Turning into further details,the next step is processing and to made the structure of sugars which included the microbes added after the sugar. Finally ethanol is ready with aid of various steps and to provide different vehicles such car, trunk, and aeroplane, which produce carbon dioxide.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify the topic and mention several relevant stages, including harvesting, pre-processing, cellulose, processing, sugars, microbes and transport. However, the account only partially covers the process: it omits the initial role of sunlight and carbon dioxide in plant growth and does not explain the carbon dioxide released by vehicles returning to the plants, which is central to the cycle. The overview is also inaccurate: ethanol is not the final stage, since it is used by vehicles and the carbon dioxide completes the cycle. Some descriptions, such as “cut into small particle,” are unclear. The response is also below the required 150 words. To improve, give an accurate overview of the cycle and describe each key transition more fully.

Coherence and Cohesion: Band 5.5

The response has a basic paragraph structure, with an introduction, an overview and two detail paragraphs, and it follows some of the process sequence. Linking phrases such as “Overall,” “Turning into further details” and “Finally” show an attempt to guide the reader. However, progression is not consistently clear: the overview calls ethanol the last step, while the final paragraph then describes transport and carbon dioxide. Some links are awkward or do not show the relationship between stages, as in “Meanwhile, it converted into pre processing.” Punctuation and spacing also interrupt the flow. Organise the details in the diagram’s exact order, use clear transitions such as “After this” and “The resulting ethanol is then used,” and connect the carbon-dioxide return to the cycle.

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “harvesting,” “cellulose,” “sugars,” “microbes” and “carbon dioxide,” so the reader can recognise the general subject. However, the range is limited and several word choices or collocations make the process difficult to understand. “Fetching into detail” is not a natural way to introduce a description; “Turning into further details” is similarly awkward. “Trunk” is the wrong term for the vehicle shown and should be “truck,” while “made the structure of sugars” does not clearly describe sugars being produced. Aim for precise process verbs and standard collocations, such as “is converted into,” “is processed to produce,” and “is used as fuel.”

Grammatical Range and Accuracy: Band 5.0

There are attempts to use longer sentences and sequencing clauses, but the range is limited and complex constructions are often faulty. For example, “The diagram illustrate the process of biofuel how to made ethanol” has subject–verb agreement and sentence-structure problems. “The initial step is Plants and trees grow and the least step was Ethanol” also has incorrect tense and an unclear construction. Errors in verb forms and agreement recur in “it harvesting the trees” and “the process was started.” Punctuation and sentence boundaries are inconsistent, particularly in the long final sentence. Practise accurate passive forms for process descriptions—for example, “The trees are harvested,” followed by “The material is pre-processed”—and check agreement, articles and tense in each sentence.

See this exact question answered at other band scores. The same prompt compared across bands.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.