Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-08-21

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)

This diagram illustrates the information about process of production for biofuel. It is also called ethanol. It include everything from taking energy from sunlight and carbon-dioxide to final product production will be explained in following paragraphs.

The first process start to producing the ethanol that it takes energy from sunlight and collecting the carbon-dioxide from plants and tress which are already grown. Then it take into the harvesting by farmer and from the pre-processing the cellulose is made. It take long time to do that. Later, it sent these cellulose into lab-testing for sugar containing.

From that, the sugar processing start and it added into the microbes and sent to various vehicles which include flight, truck and cars because they also takes carbon-dioxide from the tress.

Overall, The main factors is used for production of ethanol was sunlight and carbon-dioxide because it is very important step to create the ethanol.

AI examiner evaluation

Task Achievement / Task Response — Band 5.0

The response attempts to describe the ethanol production process but fails to accurately capture the stages shown in the diagram. The description is vague and contains factual inaccuracies, such as claiming the process involves 'lab-testing for sugar containing' or that the final product is sent to vehicles because they 'take carbon-dioxide from the trees.' The overview is also weak, as it merely repeats the input factors rather than summarizing the key stages of the transformation. The response lacks a clear, logical progression of the stages, making it difficult for the reader to follow the technical process described in the diagram.

Coherence and Cohesion — Band 5.0

The essay is organized into paragraphs, but the logical flow between sentences is often disjointed. Cohesive devices are used in a mechanical and sometimes incorrect manner, such as the transition 'From that, the sugar processing start.' Referencing is frequently unclear, particularly with the use of 'it' and 'they,' which makes it difficult to identify the subjects being discussed. While there is a basic attempt at paragraphing, the internal structure of the paragraphs lacks the necessary cohesion to guide the reader through the process effectively.

Lexical Resource — Band 5.0

The vocabulary is limited and repetitive. There is a reliance on basic terms like 'process,' 'production,' and 'things.' Some word choices are inaccurate or awkward, such as 'sugar containing' instead of 'sugar content' or 'tress' (a spelling error for 'trees'). The range of vocabulary is insufficient to describe a technical process with precision. To improve, you should focus on using more specific terminology related to industrial or biological processes and ensure that word forms are used correctly in context.

Grammatical Range and Accuracy — Band 5.0

The response contains frequent grammatical errors that occasionally impede communication. There are consistent issues with subject-verb agreement (e.g., 'The first process start,' 'it include'), article usage, and verb tense consistency. Sentence structures are predominantly simple, and attempts at more complex sentences often result in errors, such as 'The main factors is used for production of ethanol was sunlight.' Punctuation is generally functional, but the overall control of grammar is weak, preventing the expression of complex ideas clearly.

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