Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · 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 5.5)

the diagram represents how ethanol produces by differents steps it's a cycle and also represent how a biofuel called ethanol.

overall, shows biofuel production begnning with energy form with sunlight and carbondioxide. these energy helps to grow trees do such process harvesting,preprocessing, cellulose,processing with chemicals then make a sugars then added microbes in biofuel then make a ethanol .

firstly , this process starts with energy this energy made with sunlight and carbon dioxide that helps to grow trees and plants fastly and in next process public start harvesting in their fields then that crops go for preprocessing by machines these machines change it into cellulose that cellulose go in factories for processing with the help of chemical reaction .

Furthermore, after that processing we found sugars with the help of sugar companies make microbes these microbes adds in biofuel and make a new form into ethanol this ethanol ready for uses in automobile such as car, trucks , plane these vehicle exhale carbon dioxide

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the diagram as a cycle and cover the main sequence from plant growth and harvesting through processing, sugars, microbes and ethanol. You also mention the fuel’s use in cars, trucks and planes and the return of carbon dioxide, so the response addresses the key stages. However, the overview is not clearly separated from the detailed account, and some descriptions are unclear or unsupported: for example, you say “these energy” helps plants grow “fastly,” and introduce “chemicals” and “sugar companies,” which are not shown. The diagram indicates that sunlight and carbon dioxide support plant growth, while carbon dioxide from transport returns to the plants. Make this cycle explicit and describe only the processes shown; some stages, especially pre-processing and the role of microbes, need clearer explanation.

Coherence and Cohesion: Band 5.5

There is a recognisable overall order: you begin with an overview, then use “firstly” and “Furthermore” to move through the stages. This helps the reader follow the broad process. However, the progression is weakened by long, crowded sentences that combine several steps, such as the sentence beginning “firstly, this process starts with energy” and continuing through harvesting, pre-processing and cellulose. Some links are also unclear, particularly “these microbes adds in biofuel,” and the final paragraph does not clearly connect transport emissions back to plant growth. Use one paragraph for a concise overview and separate paragraphs for the production stages and the cycle’s return, with clearer sentence boundaries and references.

Lexical Resource: Band 5.0

You use relevant process vocabulary, including “harvesting,” “preprocessing,” “cellulose,” “processing,” “sugars” and “carbon dioxide,” which allows you to name several important stages. However, the range and control are limited, and some word choices or collocations make the process difficult to interpret. “Ethanol produces by differents steps” does not accurately express that ethanol is produced through stages; “public start harvesting” is also an unsuitable phrase for the diagram. Spelling and word-form errors such as “begnning,” “carbondioxide” and “microbes adds” are noticeable. Aim for precise process language and check spelling and collocations, rather than adding details such as “sugar companies” that are not represented.

Grammatical Range and Accuracy: Band 4.5

You attempt both simple statements and longer sentences with sequencing, but control of sentence structure is uneven. Errors in verb forms and agreement appear in phrases such as “ethanol produces,” “these energy helps,” and “these microbes adds.” Articles and sentence construction are also problematic in “make a sugars” and “make a ethanol,” while several clauses run together without clear punctuation. These issues sometimes make the relationships between stages hard to follow, although the general sequence remains understandable. Practise accurate passive forms for process descriptions, such as “ethanol is produced,” and build longer sentences around one clear main clause, checking agreement, articles and punctuation.

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