Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-09-18
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 provided diagram illustrates the information about how biofuel has produced and used .
Overall , it can be seen that this process has 10 stages . it starts with energy and create ethanol.
Initially , energy in life such as sunlight and carbon diaxin helps to plants and tress to grow more energy day . when they have enough condition to crop farmers will harvest them with the help of their tools then they will be transported to a place that assist to prepare for main prosessing . In this stage , plants and tress will be divided into small pices . Next , cellulose will be taken to a labortory therefore they begin main processing and produce sugar .
After that , they will add microbes which are very tiny into sugar after a period of time this stage will be create ethanol ..
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.0 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 4.5 |
| Overall | 5.0 |
Task Achievement / Task Response — Band 5.0
The response covers the main steps of the process diagram from energy and plant growth through to harvesting, processing, and the creation of ethanol, noting the addition of microbes. However, the explanation is incomplete as it omits the final stages involving transportation and the release of carbon dioxide back into the atmosphere to complete the cycle. Furthermore, the word count is 146 words, which falls slightly short of the mandatory 150-word minimum requirement. Consequently, Task Achievement is penalised for incompleteness and under-length.
Coherence and Cohesion — Band 5.0
The text demonstrates a basic attempt to organise information sequentially using transition markers such as 'Initially', 'Next', and 'After that'. However, paragraphing is weak, with short, disjointed sentences that lack overall cohesion and flow. The progression is interrupted by abrupt shifts between steps, and referencing is sometimes unclear, such as the ambiguous pronoun use in 'then they will be transported'. Cohesive devices are used mechanically rather than flexibly.
Lexical Resource — Band 5.0
The vocabulary used is generally basic and repetitive ('plants and tress', 'energy', 'process'). There are several non-standard word choices and spelling errors, such as 'carbon diaxin', 'pices' instead of pieces, and 'labortory'. Attempts to use less common vocabulary are unsuccessful due to inaccuracies. The limited range of language is minimally adequate to convey the basic topic, but frequent lexical errors restrict the score.
Grammatical Range and Accuracy — Band 4.5
The text contains a heavy concentration of grammatical errors, including severe subject-verb agreement issues ('sunlight and carbon diaxin helps to plants and tress to grow'), awkward prepositional usage, and run-on structures ('when they have enough condition to crop farmers will harvest them'). Complex sentence attempts are frequently faulty. Punctuation is also problematic, with incorrect spacing around commas and periods throughout the response.
See this exact question answered at other band scores — the same prompt compared across bands.
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