Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-26

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 process chart illustrates the production of ethanol and shows some steps that are essential for produce biofuel.

Biofuel creation is a laboratory process and very complicated that goes on for quite a long time. There are many steps, which begins from the energy of sunlight and carbon dioxide production from tress and ends with the usage of ethonole in various ways.

First of all, the sun light setting on plants and crops that produce energy in the way of corbon dioxide then farmers harvest the field before processing it. Later on this pre-processing corps converted into cellulose that is ready for processig in laboratories. This method is very difficult throughout all the time period and very experienced scientists do this process. then sugars become manufacture through this process. This approach going on with processed sugar while ethanole is making.

Furthur, the charts shows usage of ethanole. Ethanole uses as a fuel in vahicles and plans also. It is a best alternative of natural fuels like petrol, diesel, and high speed etc.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

You identify the broad subject and give a basic start-to-finish account, mentioning plant growth, harvesting, pre-processing, cellulose, sugars and ethanol use. However, the process is only partially reported: the role of microbes in converting sugars to ethanol is omitted, and the key circular feature—carbon dioxide from vehicles returning to support plant growth—is not explained. Some details are also unsupported or inaccurate, such as calling the process a laboratory procedure carried out by experienced scientists and describing ethanol as an alternative to petrol and diesel. Focus on what the diagram shows, and include a concise overview of the production stages and the carbon cycle. This would make the account more complete and better grounded in the visual information.

Coherence and Cohesion: Band 5.5

The response has a recognisable sequence, moving from plant growth through processing to fuel use, and paragraph breaks provide some organisation. Linking phrases such as “First of all,” “Later on” and “Further” help signal stages. However, progression is not consistently clear: the second paragraph introduces general claims about complexity, while the final paragraph shifts to fuel comparisons that are not shown in the diagram. Some links are awkward or unclear, particularly “then sugars become manufacture through this process” and “This approach going on with processed sugar.” Organise the description into a clear overview followed by the production stages and then the carbon-dioxide cycle, using transitions that accurately show how each stage connects.

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “harvest,” “cellulose,” “processing,” “sugars” and “fuel,” so the topic is generally recognisable. However, the range is limited and several word-choice, collocation and spelling errors make parts difficult to understand: “sun light setting,” “corbon dioxide production from tress,” “ethonole,” and “the charts shows usage.” Some expressions are also imprecise or unsuitable for describing a diagram, such as “very difficult throughout all the time period” and “high speed.” Aim for accurate process terms and standard spelling, and avoid adding vague claims. For example, describe the material as being processed into cellulose and then sugars, rather than saying sugars are “manufacture.”

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and longer sentences, and the overall sequence can usually be followed. However, complex constructions are often faulty, and errors in verb forms, agreement, articles and sentence boundaries occur frequently. For example, “which begins from” does not agree with “steps,” while “then sugars become manufacture” has an incorrect verb construction. In “This approach going on with processed sugar,” the main verb is missing, and “Ethanole uses as a fuel” lacks the required passive form. Capitalisation after full stops is also inconsistent, as in “then sugars.” Use shorter, complete sentences first, checking that each has a subject and correctly formed verb; then build more complex sentences with accurate clauses.

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