Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 19 · 2026-10-15

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 provided diagram illustrates the multi-stage process of how a biofuel is produced, consisting of several main steps, beginning with planting the trees and culminating in the production of ethanol.

Overall, the process is cyclic, and involves a series of mechanical and chemical treatments, transitioning from raw agriculture inputs through various procesing stages to the final output.

looking at the first part of the process, the procedure commence with planted and growing the trees, following the intial stage, the trees are harvested. subsequently pre-processing the material before it is finally ready for the cellulose.

Turning to the final stages, the semi-processed material is used for the cellulose. In the next step the processing in the industry to build a sugars. Once this process is completed the product undergoes to add a microbes, in the next step Ethanol is produced. when ethanol is produced they used in vehicles and these vehicles emit the carbon dioxide from the exhaust then these carbon dioxide gone into air and genrate a energy by emerging with sunlight. this process continues.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the diagram as a process and give a relevant overview that it is cyclical, with ethanol as the output and carbon dioxide returning to the growing stage. You also report several key stages, including harvesting, pre-processing, cellulose, processing, sugars and the addition of microbes. However, some details are unclear or inaccurate: the process begins with plants growing through sunlight and carbon dioxide, not with planting trees, and the account does not clearly explain that cellulose is produced before processing converts it into sugars. The final cycle is also simplified: carbon dioxide from transport returns to the plants, rather than being described as generating energy with sunlight. A more precise account of the inputs, conversions and return loop would make the main features clearer and more fully developed.

Coherence and Cohesion: Band 6.0

The response has an overall sequence, and the phrases “Overall,” “looking at the first part” and “Turning to the final stages” help signal its organisation. The reader can generally follow the movement from growing plants to ethanol and transport. However, the paragraphing and progression are not fully controlled: the first-stage account and the later stages overlap, particularly where cellulose is mentioned in both sections. Some links are mechanical or unclear, such as “In the next step” and “when ethanol is produced,” while the final sentence combines several stages and outcomes in one long chain. Group the stages into clear beginning, conversion and end-of-cycle sections, and use references such as “this material” only when their meaning is unmistakable.

Lexical Resource: Band 5.5

You use a reasonable range of process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “microbes” and “carbon dioxide,” which is appropriate to the diagram. There are also attempts at more formal phrasing, such as “culminating in” and “undergoes.” However, several choices are inaccurate or unnatural and make the process harder to understand: “ready for the cellulose,” “build a sugars,” “undergoes to add a microbes” and “genrate a energy.” Spelling errors such as “procesing,” “intial” and “genrate” also reduce accuracy. Aim for precise process collocations and check word forms and spelling; for example, say that material is “converted into cellulose” and that microbes “are added.”

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more extended sentence forms, including the overview sentence beginning “Overall” and the sequence introduced by “Once this process is completed.” However, control is uneven, and errors in verb forms, articles, agreement and sentence boundaries sometimes make relationships between stages difficult to follow. Examples include “the procedure commence,” “the trees are harvested” after the awkward construction “commence with planted,” and “they used in vehicles,” where the subject and verb form are unclear. The final section also runs several clauses together, with inconsistent capitalisation after full stops. Practise writing one accurate sentence for each stage, checking subject–verb agreement, articles and tense, then combine ideas with correctly punctuated clauses.

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