Band 6.0 IELTS Writing Task 1 Model Answer

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

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 the process of producing biofuel also called ethanol fuel from trees and plants and also show producing carbon dioxide from the use of ethanol.

Overall, the process several stages to produces ethanol, beginning with growth of plants and trees and ending with the use of ethanol in diiferent vehicles as a fuel. An important features of this process includes harvesting of trees and plants, processing of cellulose, then microbes added in sugars and then ethanol ready to use.

Initially, plants and trees grow by using sunlight and absorbing carbon dioxide from atmosphere. Once growth have enough, they are harvested and transported for pre-processing. At this stage, harvested material is prepared during processing cellulose is obtained.

Next, after that cellulose converted to sugars and then microbes added to these sugars to produce ethanol. After the production, ethanol use in different vehicles, trucks and aircraft as a fuel. during the use of ethanol, carbon dioxide is released from vehicles and then that carbon dioxide absorbed by trees and plants from atmosphere.

AI examiner evaluation

Task Achievement / Task Response: Band 7.0

You cover the main stages and give a clear overview: the process starts with plant growth and ends with ethanol being used as fuel, with carbon dioxide returning to the plants. The sequence from harvesting through pre-processing, cellulose, sugars and microbes is also reported, so the response addresses the diagram well. Some details, however, are imprecise or omitted. The diagram shows ethanol used by a car, truck and aeroplane, whereas you refer to vehicles, trucks and aircraft, leaving the car unnamed. Also, “harvested and transported” adds a transport step that is not shown, and the description of pre-processing and cellulose is unclear. More exact reporting of the stages and the three transport modes would strengthen an otherwise relevant summary.

Coherence and Cohesion: Band 6.5

The response has a recognisable structure: an introduction, an overview and a chronological account of the process. Sequencing expressions such as “Initially,” “Once,” and “Next” help the reader follow the cycle, and the final sentence connects carbon dioxide emissions back to plant growth. However, some links are mechanical or awkward, particularly “Next, after that,” which repeats the same transition. The sentence beginning “At this stage” also joins several steps without clearly separating pre-processing from cellulose production. Paragraphing is appropriate, but clearer sentence boundaries and more precise references to each stage would make the progression smoother and reduce the effort needed to interpret the sequence.

Lexical Resource: Band 6.0

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “microbes” and “absorbing carbon dioxide,” which gives the response an adequate range for this diagram. Some choices are imprecise or do not collocate naturally: “producing carbon dioxide from the use of ethanol” is less direct than describing carbon dioxide as being released, and “microbes added in sugars” does not clearly express the relationship. There are also spelling errors, including “diiferent,” and repeated use of “process” and “produce.” Aim for accurate process verbs and natural combinations, such as “convert cellulose into sugars” and “microbes are added to the sugars.” This would improve precision while retaining the relevant technical vocabulary.

Grammatical Range and Accuracy: Band 5.0

The response attempts both simple and more complex sentences, including clauses beginning “Once” and “after,” but control is inconsistent. Errors occur in basic sentence structure and verb forms: “the process several stages to produces ethanol” lacks a main verb and uses an incorrect infinitive, while “growth have enough” has faulty agreement and an unclear construction. Passive forms are also incomplete in “cellulose converted to sugars” and “ethanol use in different vehicles.” Articles and sentence boundaries need attention as well, especially the run-on construction around “prepared during processing cellulose is obtained.” These errors sometimes make the process difficult to follow. Practise complete clauses and consistent passive forms, for example, “Cellulose is converted into sugars.”

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