Band 4.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 4.0 · Cambridge IELTS 19 · 2026-09-26
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 image illustrate that how biofuel production and how ethanol is made from.There are 9 to 10 stages .
The first one is strated from energy ,plant,harvesting ,preprocessing,cellulose, processing ,sugars,microbes,ethanol to carbon dioxide. Overall, the last of the made ethanol to contvert in to airoplane ,dumpers,cars these are relase carbon dioxide.
In the first ,energy provide to sunlight and carbon dioxode gives the plants and trees grow up tall tree and farmers had harvesting og all trees.While, the pre-processing material put on the machine and convert from the cellulose make many cellulose towords from the proceeing part of the area and make sugars proccessing method and sugar convert into microbes addes method.
The ethanol passing from the airoplane , dampers, and cars all relased from carbon dioxide through from the last of the all area covered from carbon dioxide.the all method used from the processing method and relased the ethanol from the carbon dioxide.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.5 |
| Coherence and Cohesion | 4.0 |
| Lexical Resource | 4.0 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 4.0 |
Task Achievement / Task Response: Band 4.5
The student attempts to describe the process of biofuel production and how ethanol is made from the provided diagram. While the main stages of the process are mentioned in a sequential fashion, such as energy, plants, harvesting, pre-processing, cellulose, processing, sugars, microbes, and ethanol, the response lacks clarity and fails to fully explain the relationships between these stages. The overview attempt at the end mentions that ethanol is used in aeroplanes, dumpers, and cars which release carbon dioxide, but the description is confused and repetitive. Furthermore, the carbon dioxide cycle is not clearly reported. Consequently, the response addresses the task only partially, earning a Band 4.5.
Coherence and Cohesion: Band 4.0
The text is divided into three short paragraphs, but the logical organisation and progression are weak. The introduction is disjointed, featuring fragmented sentences like 'The image illustrate that how biofuel production and how ethanol is made from.' Cohesive devices are used awkwardly or inaccurately, and referencing is frequently unclear, making it difficult to follow the flow of the process. Paragraphing is present, but internal cohesion is faulty. This level of organisation aligns with Band 4.0 descriptors.
Lexical Resource: Band 4.0
The vocabulary used is very basic, repetitive, and restricted. Words from the prompt are copied directly or misused, such as 'airoplane', 'dampers' (for dumpers/trucks), and 'relase' (release). Word choice errors and spelling mistakes occur frequently throughout the short text (e.g., 'strated', 'contvert', 'towords', 'proceeing', 'addes'). The lexical range is minimal and occasionally strains the reader's understanding, fitting the Band 4.0 level.
Grammatical Range and Accuracy: Band 4.0
The grammatical range is extremely limited, consisting mostly of simple or poorly constructed complex structures that are heavily flawed. There are numerous severe grammatical errors and missing essential verbs, such as 'The image illustrate that how...', 'In the first ,energy provide to sunlight...', and 'the all method used from the processing method...'. Punctuation and sentence boundaries are poorly handled, meaning errors are dense and frequently distort the intended meaning, corresponding to a Band 4.0.
See this exact question answered at other band scores. The same prompt compared across bands.
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