Band 4.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 4.0 · 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 4.0)
this diagram is illustrate how to biofuel called ethnol is produced. this circle how to process of ethanol.
it is circuleesion for energy. energy add in sunlight or carbon dioxide it improve plants and trees grow. it improve granary.
it second use for harvesting. so it help for processing to one by one. after they harvesting procees fro pre-prosessing and than cellulose. than processing to chemical than sugars remdimate and than use ful proceed.
than after made ethanol it many type use in whiecals like car, airoplan, truck, and so many type in use this.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.0 |
| Coherence and Cohesion | 4.0 |
| Lexical Resource | 4.0 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 4.0 |
Task Achievement / Task Response — Band 4.0
The response fails to meet the minimum word count requirement of 150 words, reaching only 95 words. Consequently, the task is only partially addressed. The summary of the diagram is fragmented and lacks a clear overview of the process. While the student attempts to describe the stages, the description is superficial and fails to highlight the main features or make meaningful comparisons as required by the task instructions. The lack of detail regarding the specific stages of ethanol production means the information is not fully developed, leading to a low score for this criterion.
Coherence and Cohesion — Band 4.0
The response lacks logical organization and progression. There is no clear paragraph structure, and the sentences are disjointed. The use of cohesive devices is minimal and often inaccurate, such as the repetitive use of 'than' and 'it' to connect ideas. The lack of clear transitions between the stages of the process makes the text difficult to follow. The overall arrangement is not coherent, and the ideas do not flow logically from one step to the next, which significantly hinders the reader's understanding of the process described in the diagram.
Lexical Resource — Band 4.0
The vocabulary is very limited and repetitive, which restricts the ability to describe the process accurately. There are numerous spelling errors, such as 'ethnol' for ethanol, 'circuleesion' for circulation, 'whiecals' for vehicles, and 'airoplan' for airplane. The word choices are often imprecise or incorrect, such as 'granary' to describe plant growth or 'remdimate' for what appears to be a chemical process. The range of vocabulary is insufficient to convey the technical nature of the diagram, and the frequent errors impede communication.
Grammatical Range and Accuracy — Band 4.0
The grammatical range is extremely limited, consisting almost entirely of simple, error-prone sentences. There is a lack of control over basic sentence structure, with frequent errors in subject-verb agreement, article usage, and verb tense (e.g., 'this diagram is illustrate' instead of 'this diagram illustrates'). Punctuation is also problematic, and the sentence construction is often fragmented. The high frequency of grammatical errors makes the text difficult to read and understand, and there is no evidence of complex sentence structures.
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