Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 19 · 2026-10-31

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 diagram illistrate that how a biofuel is known as ethanol is consumed.

So according to the structure at first plants and trees grown up in presence of sunlight and carbon dioxide as it is a source of energy for them.

After this hervesting is done bye industrial methad or physically.Then pre-prcess biggen,its converted into cellulose after some prcessing sugar is consumed.sugars is then added with microbes to convert it into ethanol.

ethanol is usend in many vichles like cars,trucks,aeroplanes.when this vichles run it produce many gases one of them is carbon dioxide.

This carbon dioxide is then used by plants and trees as a energy producing source.

As the process biggens with growth of

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

You identify the main stages, including plant growth, harvesting, pre-processing, conversion to sugars, the addition of microbes, and the use of ethanol in transport. You also recognise the cycle in which carbon dioxide returns to plants. However, the account is incomplete: it ends mid-sentence (“As the process biggens with growth of”), and the diagram’s three transport modes and the carbon-dioxide emissions from them are not clearly explained. Some stages are also compressed or unclear, particularly “after some prcessing sugar is consumed.” The response contains 115 words, below the required 150, so the process is only partially summarised. To improve, provide a complete overview and describe each key transition accurately and clearly.

Coherence and Cohesion: Band 5.0

The stages are presented mostly in the order shown, and phrases such as “After this” and “This carbon dioxide” help connect events. The reader can follow the broad movement from plant growth to ethanol use and back to plant growth. However, the response is written as one continuous sequence without a clear overview or paragraph structure, and several transitions are abrupt. For example, “after some prcessing sugar is consumed” makes the relationship between cellulose, processing, and sugars difficult to follow. The final sentence is unfinished, which disrupts the progression and leaves the cycle incomplete. Group the production stages together, then describe ethanol use and the carbon cycle, using clear links between each stage.

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “cellulose,” “microbes,” “ethanol,” and “carbon dioxide,” which helps identify the subject. However, the range is limited and several spelling errors make the description less clear, such as “illistrate,” “hervesting,” “prcessing,” and “vichles.” Some word choices are also inaccurate or unnatural: “ethanol is consumed” does not clearly introduce a production process, and “sugar is consumed” misrepresents the diagram’s production of sugars. Aim for precise process verbs and standard spelling. For example, describe materials as being “converted into” or “processed into” the next product, and use “vehicles” rather than “vichles.”

Grammatical Range and Accuracy: Band 4.5

The response attempts to connect ideas in longer sentences, for example, “when this vichles run it produce many gases,” but grammatical control is inconsistent and errors sometimes make relationships unclear. The opening, “The diagram illistrate that how,” has an incorrect clause structure; “plants and trees grown up” uses the wrong verb form; and “it produce” does not agree with its subject. Articles and plurals are also problematic in “as a energy producing source.” Most sentences rely on simple patterns, with limited accurate variation. Practise forming clear passive process sentences, such as “The plants are harvested” and “The cellulose is processed into sugars,” and check subject–verb agreement, articles, and sentence punctuation.

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