Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · Cambridge IELTS 19 · 2026-08-10

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 4.5)

This image demonstrate that how ethanol is produced .

First the sunlight and Co2 reaches to plants specially sugarcane than farmer harvests and sell them into sugarcane miles for production of ethanol .

Than it is pass form 1 st step(pre -processing)in which sugarcane go into machine and than cellulose

Step 2 ) Go for processing by chemical method and microbes added into it and ethanol is formed. Some essential microbes are added and it go into vehicle like aeroplane, cars ,trak, etc and carbon dioxide released into atmosphere. And some time the vehicle which comparable foe entanol they can also damage the vehicles

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response fails to meet the minimum word count requirement of 150 words, which significantly impacts the ability to fully address the task. While the student identifies the basic stages of the ethanol production process, the description is fragmented and lacks the necessary detail to provide a comprehensive summary. Key features, such as the specific inputs and outputs at each stage, are mentioned but not clearly explained or compared. The conclusion regarding vehicle damage is not supported by the provided diagram, indicating a failure to accurately interpret the visual information. To improve, the student must describe all stages in detail and ensure the summary remains objective and grounded in the provided data.

Coherence and Cohesion — Band 4.5

The response lacks a clear logical progression. The use of paragraphing is non-existent, and the text is presented as a series of disjointed sentences. Cohesive devices are used in a very mechanical and often incorrect manner, such as the repetitive use of 'than' (intended as 'then') and the awkward transition 'Go for processing'. The referencing is also unclear, making it difficult for the reader to follow the sequence of the production process. To improve, the student should use clear paragraphing to separate the introduction, body, and summary, and employ a wider range of linking words to connect ideas logically.

Lexical Resource — Band 4.5

The vocabulary is very limited and often inaccurate. There are frequent spelling errors, such as 'trak' for 'truck', 'foe' for 'for', and 'entanol' for 'ethanol'. The word choice is basic and sometimes inappropriate for an academic report, such as 'sugarcane miles' instead of 'mills'. The student struggles to use technical terms correctly, which hinders the clarity of the description. To improve, the student needs to focus on learning the correct spelling of key terms and expanding their vocabulary to include more precise verbs and nouns related to industrial processes, such as 'harvested', 'processed', 'converted', and 'emitted'.

Grammatical Range and Accuracy — Band 4.5

The grammatical control is weak, with frequent errors that often impede communication. There are significant issues with subject-verb agreement ('This image demonstrate'), incorrect preposition usage ('pass form'), and sentence structure. The use of punctuation is also inconsistent, with unnecessary parentheses and missing full stops. The response relies almost entirely on simple sentence structures, and attempts at more complex sentences are marred by grammatical inaccuracies. To improve, the student should focus on mastering basic sentence construction, ensuring correct verb tenses, and proofreading for common errors like subject-verb agreement and word order.

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.