IELTS Line Graph — Identify Trends and Score Band 8

A note before we start

This page will not tell you to write two body paragraphs and move on. It will show you how the highest-scoring reports are built — and leave the thinking to you. Whether you are at Band 5 or Band 7, the ceiling is the same. What changes is how much practice it takes to reach it.

The graph we will work with

Every concept on this page is taught through one real IELTS-style line graph. You will see it multiple times — each time from a different angle. By the end, you will know exactly how to approach it.

Anchor example — used throughout this page

The graph below shows CO₂ emissions per capita in four countries from 1967 to 2007. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

Sweden

Italy

Portugal

Step 1 — Find the story before you write

IELTS task designers always build something dramatic into the graph. A crossover. A sharp reversal. A gap that widens. It is always there. Most students are too nervous to look — they start writing immediately and miss it.

Spend 60–90 seconds just reading the graph. Ask yourself four questions:

What is the overall story?

On this graph: UK and Sweden both fell over the period. Italy and Portugal both rose. Two countries going down, two going up — that contrast is the story. One sentence. That is your overview.

Which lines belong together?

UK and Sweden move in the same direction — declining. Italy and Portugal move in the same direction — rising. That grouping tells you how to organise your body paragraphs before you write a single word.

Where are the peaks, valleys and turning points?

UK peaks around 1973 then declines. Sweden peaks around 1977 then falls sharply. These turning points are the most important moments — they are what the examiner wants to see described.

Do any lines cross?

Yes — Sweden and Italy cross around 2000. Sweden starts much higher but falls below Italy by the end of the period. That crossover is dramatic. Name it.

Step 2 — Write the overview

The overview captures the big picture in two or three sentences — no specific figures. This is where you show the examiner you have understood the graph, not just read it. It is the most important paragraph in Task 1. Missing it or putting numbers in it both cost marks.

Overview — from the anchor graph

"Overall, CO₂ emissions per capita declined in both the UK and Sweden over the forty-year period, while Italy and Portugal followed the opposite trend, recording consistent increases. By the end of the period, Sweden's emissions had fallen below those of Italy — a striking reversal from their positions in 1967."

Notice: no numbers. No years. Just the shape of what happened — and the most dramatic feature called out directly. That is what an overview does.

Step 3 — The comparison that kills most reports

Look at what happens when a student describes the same graph by listing numbers versus describing the trend. Both are about the UK line. Same data. Completely different score.

Lower score — listing numbers

"In 1967 the UK's emissions were about 11 metric tonnes. In 1973 they rose to 13. In 1977 they were about 12. In 1987 they fell to about 10. In 1997 they were around 9.5. In 2007 they stood at approximately 9."

Higher score — describing the trend

"The UK recorded the highest emissions throughout the period, peaking at approximately 13 metric tonnes in the early 1970s before declining steadily to around 9 metric tonnes by 2007 — still the highest of the four countries."

The higher-scoring version says more in fewer words. It groups the movement into phases — a peak, then a steady decline — and adds a comparison at the end. That is what trend description looks like in practice.

Step 4 — Organise your body paragraphs

Structure your report around the data — not around a template someone gave you. There are three natural ways to organise a line graph report:

By group — lines that share the same direction or category go together. On this graph: declining countries in one paragraph, rising countries in another. This is the clearest approach when the grouping is obvious.
By time period — split the x-axis. First half of the period in paragraph one, second half in paragraph two. Works well when there is a clear turning point in the middle.
By performance level — high figures in one paragraph, low in another. Works when lines cluster into distinct bands.

Safe and solid

The floor, not the ceiling. Works for most graphs. Good starting point while building confidence.

Often the best fit

When data has three clear groups or phases. Often the most natural choice — and what this graph calls for.

Advanced — valid

Shorter, tightly linked paragraphs. Rare but powerful. Executing this cleanly in 20 minutes signals real command.

Your teacher's note

Every other IELTS site tells you to write two body paragraphs. That is the minimum effort — not the standard. A student who produces three or four well-structured, logically connected paragraphs in 20 minutes is demonstrating more capability. The data decides the structure. You execute it.

Vocabulary — match the word to the shape

The words you use must match what you actually see. Using "plummeted" on a line that drops 8% over ten years is an accuracy error. Using "edged up" when a line doubles is equally wrong. Each shape below has its own vocabulary.

Sharp rise

surgedsoaredrose sharplyincreased dramaticallya sharp increase

"Sweden's emissions surged from 9 to over 10.5 metric tonnes between 1967 and 1977."

Gradual / steady rise

rose steadilyincreased graduallyedged upclimbed slowlygained momentum

"Italy's emissions rose steadily throughout the period, climbing from around 4.5 to nearly 8 metric tonnes."

Sharp fall

plummetedfell sharplydropped dramaticallydeclined steeply

"After peaking in 1977, Sweden's emissions fell sharply, dropping from 10.5 to just 5.5 metric tonnes by 2007."

Gradual fall

declined graduallyfell steadilydecreased slowlytapering offdipped slightly

"The UK's emissions declined gradually from their peak, tapering off at around 9 metric tonnes toward the end of the period."

Plateau — levelling off

levelled offstabilisedremained stableshowed little changea plateau

"The UK's emissions levelled off at around 9 metric tonnes in the final decade of the period."

Fluctuation

fluctuatedvaried considerablyrose and fellan erratic trendan irregular pattern

"Consumption fluctuated between 20 and 45 units throughout the period, with no clear overall trend."

Convergence and crossover

convergedcrossedovertookthe gap narroweddivergedwidened

"By around 2000, Sweden's emissions had fallen below those of Italy — the two lines having converged and then diverged in opposite directions."

Fall then recovery

reboundedrecoveredbounced backbottomed outreached a low point before rising

"After bottoming out in the mid-1980s, the figure rebounded steadily, recovering most of its earlier losses by 2007."

Tense — follow the data, not a rule

There is no single tense rule for line graphs. The tense follows what the data is actually showing. A high-scoring student understands this instinctively — and that understanding signals to the examiner.

Past events — past simple. "Sweden's emissions fell sharply after 1977."
Change from past to present — present perfect. "Emissions have declined significantly over the past four decades."
Future projections — future forms. "The figure is projected to rise further by 2030."

Read the graph dates before you write. If the data runs into the future, switch tense at the point the projection begins. Consistency within each time period matters more than finding one "correct" tense.