Band 4.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 4.0 · Cambridge IELTS 19 · 2026-09-28
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 illustrates that a biofuel called the production of enthanol.
Overall the diagram show that the strat in the process of the energy and the end of the process is carbon dioxide.
The first process of the diagram the sunlight fall on the plant and the second step is harvesting. The thierd step is show the pre-processing and the fourth step is cellouse. the fifth step show that the processing
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 3.0 |
| Coherence and Cohesion | 4.0 |
| Lexical Resource | 4.0 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 4.0 |
Task Achievement / Task Response: Band 3.0
The response fails to meet the minimum word count requirement of 150 words, containing only 71 words. Consequently, the description of the biofuel production process is severely incomplete. The student mentions a few initial steps such as sunlight falling on plants, harvesting, pre-processing, and processing, but completely omits the later stages of the cycle, including the addition of microbes, the production of ethanol, its use in transportation, and the release and recycling of carbon dioxide. Because of this significant under-length and lack of development, the task is only minimally addressed.
Coherence and Cohesion: Band 4.0
The response is extremely brief and consists of only a few fragmented sentences and paragraphs, lacking an overall logical structure or coherent progression. While the student attempts ordinal numbering such as 'The first process', 'the second step', and 'The thierd step', the writing breaks off abruptly after the fifth step. There is a lack of effective cohesive devices to guide the reader through a complete description of the circular process, and the paragraphing is underdeveloped due to the extreme brevity of the text.
Lexical Resource: Band 4.0
The vocabulary used is very basic and repetitive, with noticeable spelling and word-choice errors, such as 'enthanol' instead of 'ethanol', 'thierd' instead of 'third', and 'cellouse' instead of 'cellulose'. The student relies heavily on simple terms directly copied or slightly altered from the prompt. The range of vocabulary is severely limited and inadequate for an Academic Task 1 response, occasionally causing confusion or impeding smooth reading.
Grammatical Range and Accuracy: Band 4.0
The grammatical range is extremely limited, consisting mostly of poorly constructed and faulty simple or attempted complex sentences. Examples such as 'The diagram illustrates that a biofuel called the production of enthanol' and 'The thierd step is show the pre-processing' demonstrate serious control issues with basic verb forms, articles, and clause structures. Frequent errors persist throughout the short text, causing difficulty for the reader and reflecting weak grammatical control.
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