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 gives information about how ethanol which is an important biofuel is being manufactured.

Overall, it can be seen that the production of ethanol is done through seven different stages.

To begin with, plant and trees grows through sunlight and carbon dioxide which are then harvested in the second stage. After harvestation subject is pre-processed and cut into small pieces which is called celluose.The cellulose goes through additional processing in the labortories at the industrial level how produce sugar from that cellulose.

In the next stage, when the cellulose is processed into sugar it release a by product by adding microbes in it this by-product is called ethanol

which then used in the form of fuel in vehicles like trucks, airplanes and cars. This ethanol release carbon dioxide in the atomosphere which helps the plants and trees to grow and give more material for the future ethanol production continuing the cycle.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the process as a cycle and describe its main stages, from plant growth and harvesting through processing to ethanol use and carbon dioxide returning to support further growth. This gives the reader a relevant overview, and the sequence is mostly recognisable. However, the overview says there are “seven different stages,” which does not accurately capture the full sequence shown, including the addition of microbes and the transport uses. Some details are also unclear or unsupported: the diagram does not specify that the material is cut into small pieces or that processing occurs in laboratories. To strengthen the response, report the cellulose-to-sugars conversion and microbial stage precisely, and distinguish ethanol production from its later use as fuel.

Coherence and Cohesion: Band 6.5

The response has a clear overall progression: an introduction, a brief overview, and two paragraphs following the process from plant growth to the carbon cycle. Sequencing phrases such as “To begin with” and “In the next stage” help guide the reader, and the final sentence effectively links the end of the process back to its beginning. Some connections are less clear, particularly “it release a by product by adding microbes in it,” where the relationship between sugar, microbes, and ethanol is difficult to follow. The long final process sentence also combines several stages without clear separation. Use shorter sentences at key transitions and refer explicitly to each material or stage to make the progression more precise.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processed,” “cellulose,” “microbes,” and “carbon dioxide,” which helps convey the subject. There is also some attempt at more specific language, such as “industrial level.” However, several word choices and forms are inaccurate or unnatural, including “harvestation,” “celluose,” “labortories,” and “release a by product.” “Manufactured” is understandable, but “produced” is more natural for describing this process. These errors, together with phrases such as “in the atomosphere,” make the vocabulary less controlled and can briefly distract the reader. Check spelling carefully and favour accurate process collocations over invented or awkward forms.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and complex sentences, including a relative clause in “which then used in the form of fuel” and a time clause beginning “when the cellulose is processed.” However, errors occur across verb forms, agreement, articles, and sentence construction. For example, “plant and trees grows” has a subject–verb agreement problem, while “which then used” needs a passive verb form (“is then used”). The sentence beginning “After harvestation subject is pre-processed” also lacks clear article use and has an unclear subject. Some long sentences join several ideas without reliable grammatical control. Practise accurate passive forms for process descriptions and check each clause for a clear subject and correctly formed verb.

See this exact question answered at other band scores. The same prompt compared across bands.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.