Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 19 · 2026-11-04

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 given step-by-step process diagram illustrate about the formation of ethanol .

Overall, it has several step after which the ethanol is formed. There are few stages and the first one is to grew their trees and the last one is to added microbes on sugars to made ethanol.

Firstly, for the growth of plants carbon dioxide and sunlight are very important to get energy from them and goes to harvestimg. When they harvesed the plants then it was shifted to machine of pre-processing to made cellulose from them and after making cellulose it was transpered to the factory for further process.

Further more, in factory, it go ahead for processing to made sugars from them after the process of factory and their last stage is to added microbes with suger to form ethanol for the uses of truck, car and the aroplane, which released carbon dioxide into the environment which again usefull for the plants.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages from plant growth through harvesting, pre-processing, cellulose, processing, sugars and ethanol, and you identify the transport uses and return of carbon dioxide. This gives the reader a broadly accurate account of the cycle. However, the overview is not fully clear: saying the “last one” is adding microbes overlooks that ethanol is then used by vehicles and carbon dioxide returns to the plants. Some details are also imprecise, such as saying sunlight and carbon dioxide “goes to harvestimg”; these are inputs for plant growth, not a stage leading directly to harvesting. To strengthen the response, summarise the circular nature of the process in the overview and describe the carbon-dioxide loop more precisely.

Coherence and Cohesion: Band 6.0

The response has a recognisable progression, with an opening overview followed by stages from plant growth to ethanol production and its use. Sequencing words such as “Firstly” and “Further more” help signal movement through the process. However, the overview’s claim that microbes are the final stage conflicts with the later account of transport and carbon dioxide, so the overall progression is not entirely clear. Some links are also awkward or vague, particularly “after making cellulose it was transpered to the factory” and “after the process of factory.” Use clearer references to each material and stage, and organise the final cycle as a distinct concluding part. This would make cohesion less dependent on basic sequencing phrases.

Lexical Resource: Band 5.0

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “processing,” “sugars,” and “ethanol,” which allows you to report the key stages. However, the range of verbs and linking expressions is limited, and several word choices or forms are inaccurate: “formation” is less suitable than “production,” “shifted to machine” is unclear, and “for the uses of” is an awkward way to describe fuel use. Spelling errors such as “harvesed,” “transpered,” “suger,” and “aroplane” also reduce precision. Build a more accurate set of process verbs—such as “is converted into,” “is transported to,” and “is used to fuel”—and check spelling carefully.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and longer sentences, including a sequence joined with “after,” and the general process can usually be followed. However, errors in verb forms, agreement, articles and sentence construction are noticeable. For example, “diagram illustrate” needs subject–verb agreement, while “the first one is to grew” and “the last one is to added” use incorrect verb forms. In “it go ahead for processing to made sugars,” the verb forms and structure are also faulty. Some sentences combine several stages without clear grammatical links, making relationships harder to understand. Practise accurate passive forms for process descriptions, such as “the plants are harvested” and “the cellulose is processed into sugars,” alongside correct infinitives and agreement.

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