IELTS Academic Writing Task 1 Structure: The Four-Paragraph Answer

IELTS Academic Writing Task 1 gives you 20 minutes to describe visual information in at least 150 words. It might be a line graph, bar chart, pie chart, table, map, or process diagram.

The task is narrower than Task 2 and, for that reason, more mechanical. There is a structure that works for almost every prompt, and the main risk is not writing badly — it is leaving out the paragraph the examiner is specifically looking for.

The four paragraphs

1. Introduction — one sentence paraphrasing what the visual shows.
2. Overview — two or three sentences stating the main patterns, with no specific figures.
3. Detail paragraph 1 — the first group of data, with figures.
4. Detail paragraph 2 — the second group, with figures.

That is it. No conclusion, no opinion, no speculation about causes.

The introduction: one sentence

Paraphrase the prompt. Change the vocabulary and, where you can, the grammar. Do not copy the wording — copied text does not count towards your 150 words.

Prompt: The chart below shows the percentage of households in owned and rented accommodation in England and Wales between 1918 and 2011.

Introduction: The bar chart compares the proportion of homes that were owner-occupied with those that were rented in England and Wales over a period of just under a century.

Useful substitutions:

One sentence is enough. Two is acceptable. Three means you are already writing the overview.

The overview: the paragraph that decides your band

A clear overview is required for Band 6 and above under Task Achievement. Answers that go straight from the introduction into figures are capped, regardless of how accurate those figures are.

An overview states the biggest patterns without specific numbers. Ask yourself:

• What is the largest or smallest category?
• What is the overall direction of change?
• Where is the most dramatic movement?
• Is there a crossover, a reversal, or an exception?

Overview: Overall, home ownership rose substantially across the period while renting fell by a similar margin, with the two crossing over around the middle of the century. The most rapid change occurred in the decades immediately after 1945, and both figures were relatively stable in the final twenty years.

Note: no figures, two clear patterns, one qualification. Around 45 words.

Signal it clearly. Overall, In general, Broadly, or The most striking feature is all work, and the examiner is looking for exactly this signal.

Put the overview second, immediately after the introduction. Some candidates put it at the end as a conclusion. It is not wrong, but it is easier to run out of time and lose it entirely.

Detail paragraphs: group, then compare

The most common weakness in detail paragraphs is listing. A list of figures in the order they appear on the chart shows no selection and makes poor reading.

Group the data instead. Sensible groupings:

• By trend — everything rising in one paragraph, everything falling in the other
• By size — the large categories together, the small ones together
• By period — before and after a turning point
• By subject — one country or product per paragraph

Then compare within each group.

Detail 1: Owner occupation began at just 23% in 1918 and climbed steadily for most of the century, passing 50% shortly before 1971 and peaking at approximately 69% in 2001. The steepest growth came between 1939 and 1971, when the figure rose by more than 30 percentage points.

Detail 2: Renting followed the opposite path, falling from 77% in 1918 to around 31% by 2001. The decline was sharpest in the same post-war decades, though the figure ticked upwards slightly in the final ten years, reaching about 35% in 2011.

Each paragraph has a group, a direction, supporting figures, and one specific observation about rate of change.

Language for describing data

Trends: rise, climb, increase, grow, surge / fall, decline, drop, decrease, plummet / level off, plateau, remain stable, fluctuate

Degree: sharply, steeply, dramatically, substantially / gradually, steadily, slightly, marginally

Approximation: approximately, around, just over, just under, roughly, nearly, well above

Comparison: more than double, half as many, three times as high, by a margin of, compared with

Vary the grammar as well as the vocabulary — a paragraph of X rose to Y repeated five times reads mechanically:

The figure rose to 45%. (verb) There was a rise of 12 percentage points. (noun) 2001 saw the highest figure. (period as subject) Having peaked in 1990, the figure then fell. (participle clause)

For a fuller treatment, see the Task 1 vocabulary guide.

Timing: 20 minutes, and stick to it

• 3 minutes — read the visual, identify the two or three main patterns, decide your grouping.
• 14 minutes — write.
• 3 minutes — check figures against the chart and scan for your own common errors.

Task 2 is worth twice as much as Task 1. Running to 30 minutes on Task 1 is one of the most expensive mistakes in the whole writing test.

Different visual types

Line graph. Trends over time. Group by direction of change.

Bar chart. Comparison between categories. Group by size or by shared behaviour.

Pie chart(s). Proportions. If there are two, the comparison between them is the point.

Table. Usually the densest. Select — you cannot report every cell, and choosing what matters is part of the task.

Map. Change over time in a place. Group by area, and use position language: to the north of, adjacent to, was replaced by, was extended into.

Process. Sequence rather than trend. Use passive voice and sequencers: is then transferred to, once this has cooled, at the final stage. There are no figures, so the overview states the number of stages and where the process begins and ends.

Five errors that cost the most

1. No overview. Caps Task Achievement. The single most expensive omission.
2. Figures in the overview. It should state patterns, not data.
3. Explaining causes. "This is because more people could afford mortgages" is speculation the task did not ask for.
4. Listing every number. Select and compare instead.
5. Under 150 words. Penalised directly, and easy to avoid if you know what 150 words looks like in your own handwriting.