Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · Cambridge IELTS 19 · 2026-09-22

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 4.0)

The diagram presents the information about what the method a biofuel whereby name is ethanol is produced. how we can got.

Overall the data shows whats type of method ethanol is produced. Firstly when the ethanol process is started in the fields and it is mostly growing in the summer when the tree and plants is looks greenery and most important thing is they need to growing energy sunlight and carbon dioxide is bebefical for us.

When the plant is ready the farmers start the harvesting by the powerfull machines. After that second process is to made the ethanol is they can do pre processing its mean clean the material needed and not recuired cellulose it. Then the after process is atarting in the factory they made the sugars.

Added the microcbes and produced the ethanol then after mostly used in the differnt transports vehical like cars loading truck and bikes. Whereby they helped to thr transport the things from one place to another.

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response attempts to describe the process of ethanol production shown in the diagram, but it falls short in several areas. While it mentions key stages such as growing plants, harvesting, pre-processing, adding microbes, and final use in vehicles, the information is presented in a very confused and disjointed manner. The description lacks clarity and fails to form a coherent summary of the main features or a proper overview. Sentences like 'what the method a biofuel whereby name is ethanol is produced' indicate a struggle to comprehend and report the visual data accurately, leading to a Band 4 level of task achievement.

Coherence and Cohesion — Band 4.0

The organization of the text is weak. Although paragraphing is attempted, the progression of ideas is difficult to follow due to poor linking and fragmented thoughts. Cohesive devices are used awkwardly or incorrectly, such as 'Then the after process is atarting'. Paragraph transitions are unnatural, and referencing is often unclear (e.g., 'whereby they helped to thr transport the things'). Overall, the information and ideas are not arranged in a sufficiently coherent manner to achieve a higher score, aligning with Band 4 descriptors.

Lexical Resource — Band 4.0

The vocabulary used is basic, repetitive, and heavily restricted. The student struggles with fundamental word forms and collocations, producing non-standard phrases such as 'growing energy sunlight', 'powerfull machines', and 'microcbes'. There are numerous spelling errors ('bebefical', 'atarting', 'vehical') and awkward word choices that strain the reader's understanding. The lexical range is minimally adequate to convey a rudimentary topic, but errors are frequent enough to restrict the score to Band 4.

Grammatical Range and Accuracy — Band 4.0

Grammatical control is extremely weak throughout the response. There is a complete lack of accurate complex structures, and even simple sentences are frequently ungrammatical or incomplete (e.g., 'how we can got', 'what the data shows whats type of method ethanol is produced'). Verb tenses, word order, and subject-verb agreement are severely compromised ('tree and plants is looks greenery'). Errors occur in almost every sentence and frequently distort meaning, placing this performance firmly in Band 4.

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

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