Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-08

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 given diagram illustrates the cycle of production of ethanol from energy( sunlight and carbon dioxide). Which is used as biofuel by the most of the transport vehicles.

Overall, it involves numerous steps and stages begining with the usage of enery by the plants to help themselves in growing to the end of usage of produced biofuel by the different transport vehicles.

Firstly, the plants grow by using the energy which is the combination of sunlight and carbon dioxide, then the grown plants and tress are harvested by the farmers and are subjected for the pre-processing . After the pre-processing, the cellulose is derived from the pre-processed plants and is subjected to further processing in chemistry labs where sugars are prepared. The resulted sugars are introducesd with the microbes for the production of the final product ethanol.

Lastly, the produced ethanol is used as a biofuel in most of the transport vehicles. Those vehicle then produce carbon dioxide as a result of the ethanol usage, which is then again help the plants to grow in combination with sunlight. Like this, the whole process continues.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages, from plant growth and harvesting through processing, sugar production, the addition of microbes and ethanol use in transport. The overview also identifies the cycle, including carbon dioxide returning to support plant growth, which captures an important feature of the diagram. However, some details are less fully or precisely reported: the diagram shows ethanol being used by a car, truck and aeroplane, whereas “most of the transport vehicles” is a broader claim. “Chemistry labs” is also not shown; the diagram labels this stage simply as processing. To strengthen the report, describe the stages and outputs using the diagram’s labels and make the three transport modes explicit.

Coherence and Cohesion: Band 6.0

The response has a clear overall arrangement: an introduction, an overview, and a chronological account of the process. Sequencing words such as “Firstly,” “After,” and “Lastly” help the reader follow the cycle, and the final sentence returns to the starting point. Cohesion is sometimes mechanical, however, and the opening sentence fragment beginning “Which is used…” is not smoothly connected to the first sentence. Some references are also imprecise: “Those vehicle” does not clearly agree with the plural transport vehicles, and “the whole process” could be linked more explicitly to the cycle. Use a wider range of natural transitions and ensure each pronoun clearly refers to its intended noun.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “microbes,” and “carbon dioxide,” so the stages are generally understandable. There are also attempts at more formal wording, such as “derived” and “subjected,” but some choices are inaccurate or awkward in context: “subjected for the pre-processing” and “the resulted sugars” do not sound natural, while “chemistry labs” adds an unsupported detail. Spelling errors such as “begining,” “enery,” “tress,” and “introducesd” reduce accuracy. Aim for precise, conventional process language and check spelling; simpler accurate phrases such as “is processed to produce sugars” would be more effective.

Grammatical Range and Accuracy: Band 5.5

You attempt a mix of simple and complex sentences, including a sequence joined with “then” and a clause explaining that carbon dioxide helps plants grow. The main stages remain understandable, but some grammatical errors recur. The opening “Which is used…” is a sentence fragment, and “the whole process continues” would be clearer as “the cycle continues.” There are also agreement and verb-form problems in “Those vehicle then produce” and “which is then again help the plants,” as well as awkward article and preposition patterns in “subjected for the pre-processing.” Use complete sentences, check singular and plural agreement, and review verb forms when joining clauses. More accurate control of these structures would make the description smoother.

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