Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-27

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 6.0)

The diagram illustrates, Ethanol manufacturing process by using energy and plant trees described as various stages of production of biofuel.

Ethanaol as biofuel is main source of fuel on transportation mode whether it was Car, truck or aeroplane. Sunlight and carbon dioxide as energy and plant and trees play a vital role to manufacture ethanol.

Firstly, Plants and trees grow by using energy as sunlight and carbon dioxide. After receiving a optimum size , Plants and tress harvested as harvesting process. Then these Plants and trees converted to cellulose by pre-processing process. These cellulose transfer to industry to obtain sugar by various kind of processing. Then microbes added to these sugars and finally received biofuel as ethanol.

Transport vehicles use ethanol as a biofuel to add in specific gasoline fuel. Transport vehicles like Car, Truck and Aeroplane release carbon dioxide by using biofuel. This carbon dioxide mix with atmosphere and again uses as energy.As we called this is circular process of energy and uses of biofuel.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages from plant growth through harvesting, pre-processing, processing, the addition of microbes and ethanol production, and you also mention the transport uses and return of carbon dioxide. This gives the response a relevant account of the cycle. The overview is present in the final sentence, although “circular process” could be stated more clearly and directly. Some details are less fully reported: for example, the diagram shows cellulose becoming sugars, but the description says the plants are converted to cellulose and then sugars without clearly distinguishing those outputs. It also omits that carbon dioxide from transport returns to support plant growth. Clarifying these links and describing the cycle precisely would make the account more complete.

Coherence and Cohesion: Band 6.0

The response has a generally coherent sequence: the first body paragraph follows the production stages, and the second moves to transport use and carbon dioxide. Sequencing words such as “Firstly,” “After,” “Then” and “finally” help the reader follow the process. However, the progression is sometimes mechanical, and some links between stages are unclear. For instance, “Then these Plants and trees converted to cellulose by pre-processing process” compresses pre-processing and the production of cellulose into one step, while the diagram separates them. The opening paragraph also repeats information about sunlight, carbon dioxide and transport that is developed later. Use clearer paragraphing for the overview and stages, and connect each output explicitly to the next stage.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “carbon dioxide,” which allows you to describe the subject. There is also some attempt at more specific wording, such as “manufacturing process” and “circular process.” However, several word choices and collocations are awkward or imprecise, including “optimum size,” “various kind of processing,” “add in specific gasoline fuel” and “mix with atmosphere.” Spelling errors such as “Ethanaol” and “tress” also reduce accuracy. Aim for natural process descriptions and check spelling and word forms; for example, say that plants are harvested, cellulose is processed into sugars, and ethanol is used as fuel.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentences, including the sequence beginning “Firstly, Plants and trees grow…” and the sentence describing vehicles releasing carbon dioxide. The overall meaning is usually recoverable, but errors in sentence structure and grammatical control are noticeable. Examples include “Plants and trees converted to cellulose,” which needs a passive verb form (“are converted”), and “After receiving a optimum size,” where the article and sentence construction are faulty. There are also problems with agreement and punctuation, as in “This carbon dioxide mix with atmosphere and again uses as energy.As we called…” Capitalisation is inconsistent, and spaces after full stops are missing. Practise accurate passive forms and articles, and proofread sentence boundaries.

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