Band 7.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 7.0 · Cambridge IELTS 19 · 2026-07-29

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 7.0)

The above diagram shows how a biofuel called ethanol is produced.

Overall, ethanol production is a cyclical process consisting of several stages, beginning with the growth of plants using sunlight and carbon dioxide and ending with the use of ethanol as a fuel. Notably, the carbon dioxide released during the production and consumption is reabsorbed by plants, creating a continuous cycle.

Initially, plants and trees grow by using sunlight together carbon dioxide from atmosphere. Once the crops have matured, they have harvested and sent for pre-processing during which carbon dioxide is emitted. The treated plant material is then converted into cellulose before being transferred to a processing unit.

In the next stage, the cellulose is processed into sugars. Microorganisms are subsequently added to ferment these sugars, producing ethanol. The finished biofuel is then used to power different forms of transport, including cars, trucks and aircraft. As ethanol is burned, carbon dioxide is released into atmosphere. Addition emissions also occur during the pre processing stage. However, this carbon dioxide is absorbed by growing plants through photosynthesis, therefore

AI examiner evaluation

Task Achievement / Task Response — Band 7.0

You have successfully identified the main features of the ethanol production process and provided a clear overview. You covered the cyclical nature of the process well, from plant growth to fuel consumption and the reabsorption of carbon dioxide. However, the response ends abruptly with an incomplete sentence ('therefore'), which prevents a full completion of the final point. To reach a higher band, ensure that all descriptions are fully articulated and that the conclusion is finished. Despite this, the key stages are logically sequenced and the comparison between the production and consumption phases is well-integrated into the summary.

Coherence and Cohesion — Band 7.5

The response is logically organized, with a clear introduction, body paragraphs, and a logical flow of information. You use cohesive devices such as 'Initially', 'Once', 'In the next stage', and 'subsequently' to guide the reader through the process. However, the cohesion is interrupted at the very end of the text where the final sentence is left unfinished. This creates a minor issue with the overall flow. Paragraphing is used effectively to separate the stages of the process, which helps the reader follow the cyclical nature of the diagram.

Lexical Resource — Band 7.0

You demonstrate a good range of vocabulary appropriate for a process description, such as 'cyclical', 'matured', 'cellulose', 'ferment', and 'photosynthesis'. The word choices are generally accurate and help convey the technical nature of the task. There are a few minor errors, such as 'Addition emissions' (should be 'Additional') and missing articles, for example, 'from atmosphere' (should be 'from the atmosphere'). These errors do not impede communication, but addressing them would improve the precision of your writing.

Grammatical Range and Accuracy — Band 6.5

You use a mix of simple and complex sentence structures, which is appropriate for this task. There are some grammatical slips, such as 'they have harvested' (should be 'they are harvested') and missing articles throughout the text. Additionally, the final sentence is incomplete, which is a significant grammatical error. While you show control over complex ideas, the frequency of these small errors and the unfinished sentence prevent a higher score. Focusing on proofreading for subject-verb agreement and article usage will help you achieve greater accuracy.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.