Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-29

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 presents how a biofuel known as ethanol is manufactured.

Overall, The process of biofuel production involved several stages, it all begains with energy, followed by harvesting stage, and then cellulose, further it involveed the stage of processing and then eventually it leads to the formation of ethanol.

According to given diagram, it is clear it begins when energy such as sunlight and carbon dioxide reached to plants and trees, which is then harvested and goes to the stage of pre-processing. where it is converted to cellulose, and then processing stage takes place where it is been changed to sugars. Furthermore, microbes are been added which result in formation of ethanol.

After formation of ethanol it is then used by several means of transportation such as car, trucks and areoplanes which in result emission of carbon dioxide is produced from using transportation. Eventually, carbon dioxide goes back to air and the exaect cycle continued.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages in the correct order, from sunlight and carbon dioxide supporting plant growth through harvesting, pre-processing, cellulose, processing, sugars, microbes and ethanol. You also identify the transport uses and the return of carbon dioxide, so the response addresses the full cycle. The overview, however, is not fully accurate: it says the process begins with energy and then harvesting, omitting plant growth, and it does not clearly explain that carbon dioxide released by the vehicles returns to the plants. The body gives a useful sequence, but some stages are only briefly described. To strengthen the report, make the cycle and its key inputs and outputs explicit in the overview, then describe the stages more precisely.

Coherence and Cohesion: Band 6.5

The response has a recognisable structure: an introduction, an overview, and two paragraphs that follow the production sequence and then describe transport and emissions. This gives the reader a generally logical route through the diagram. Some links are less clear or mechanically repeated, however. For example, “which is then harvested and goes to the stage of pre-processing” leaves the referent of “which” uncertain, while “Furthermore” and “Eventually” do not always express the relationship as precisely as they could. The overview also repeats information that is developed in the body without clearly highlighting the cycle. Use clearer sentence boundaries and references, and connect the final carbon-dioxide stage directly back to plant growth.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “microbes,” and “emission,” which helps communicate the diagram’s stages. There is some variation in how you describe the process, but several word choices and forms are inaccurate or awkward, such as “manufactured” for a process that is more naturally described as ethanol being produced, “reached to plants,” and “the exaect cycle continued.” Spelling errors such as “begains,” “involveed,” and “areoplanes” also reduce precision. Aim for accurate, natural collocations and check spelling carefully; a small set of precise process verbs will be more effective than repeated general phrases such as “stage” and “formation.”

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentences, including clauses linked with “which,” “where,” and “after,” but control is inconsistent. Several sentences contain faulty verb forms or agreement, for example “The process … involved several stages, it all begains,” “carbon dioxide reached to plants,” and “microbes are been added.” The overview also contains a comma splice, and the lowercase “where” after a full stop shows inconsistent sentence punctuation. These errors sometimes make relationships between stages harder to follow, although the intended sequence is usually recoverable. Work on consistent present-tense passive forms for process descriptions, such as “is harvested” and “is converted,” and separate complete clauses with full stops or suitable conjunctions.

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