Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-29
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 5.0)
The process diagram elucidates that how a biopetrol called ethanol is created.
In an overview, there are several steps include the cyclical diagram. The first step use the energy (sunlight + carbon dioxide) to help the plants and trees grow and last step carbon dioxide into the air.
To begin with, the first step is energy (sunlight + carbon dioxid) use to help the plants and trees grow, However the second stage in the diagram is harvesting, Moreover the third step is pre-processing of the plants related goods however after the pre-processing stage into the cellulose.
In addition the fifth step in the process cellulose into the processing the products, Furthermore sixth stage proceesing into the make sungar, Next step sugar into the microbes added, additionally microbes into the ethanol fuel, Last but not the least the ethanol petrol is use in the car, truck and aeroplane, At the end the vehicles produce the carbon dioxide and mix into the air.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The student attempts to describe the main stages of the process diagram illustrating how ethanol is produced. While the response covers the general flow from energy and plant growth through processing to fuel usage and carbon dioxide release, the explanation suffers from serious inaccuracies in describing the sequence and mechanics. For instance, the text states 'pre-processing stage into the cellulose' and 'cellulose into the processing the products', which misrepresents the relationships between the steps shown in the diagram. Furthermore, the overview is extremely basic and lacks a clear summary of the overall cyclical nature of the process. Consequently, the task is only partially addressed, leading to a band score of 5.0.
Coherence and Cohesion: Band 5.0
The organisation of the text is hindered by a heavy reliance on repetitive transitional phrases such as 'To begin with', 'Moreover', 'In addition', and 'Furthermore', which are often used incorrectly to string together poorly structured clauses rather than guide the reader logically. Paragraphing is extremely weak, with almost the entire response compressed into a single dense block following the opening sentence. Referencing and cohesive devices are inadequate, making it difficult to follow the progression of the steps in the diagram. This lack of effective structuring and logical flow aligns with the descriptors for a band 4.5, which rounds to 5.0.
Lexical Resource: Band 5.0
The vocabulary used throughout the essay is very basic, repetitive, and often unnatural. The student uses terms like 'biopetrol', 'sungar', and awkward phrasing such as 'plants related goods'. There are numerous word choice and spelling errors (e.g., 'dioxid', 'proceesing'). While the student attempts to use less common vocabulary items related to the prompt, the execution is highly inaccurate and frequently strains comprehension. The lexical range is minimally adequate for the task, but errors in word formation and spelling are prominent, placing the performance at a band 5.0.
Grammatical Range and Accuracy: Band 4.0
The grammatical structure of the essay is severely flawed. The opening sentence contains a direct grammatical error ('The process diagram elucidates that how...'). Throughout the text, there is an absence of well-formed complex sentences, and many sentences are mere fragments or run-on clauses linked by incorrect conjunctions (e.g., 'The first step use the energy... and last step carbon dioxide into the air'). Frequent errors in verb tense, subject-verb agreement, and word classes cause considerable difficulty for the reader and obscure meaning. This demonstrates control characteristic of a band 4.0, which warrants a 4.5 rounded or solid 4.0; a 4.0 is awarded here.
See this exact question answered at other band scores. The same prompt compared across bands.
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