Describe trends over time across one or more lines.
Line graph descriptions need an overview that captures the BIG picture without numbers.
Graph: A line graph showing rainfall in mm in three cities (Sydney, Cairo, London) across 12 months. Sydney is highest year-round, Cairo is lowest with near-zero summer rainfall, London has a moderate but very flat curve.
Which sentence is the best OVERVIEW (not a body paragraph)?
Use a 4-paragraph structure: Introduction, Overview, Body 1, Body 2. Open with: 'The line graph illustrates the trends in...' or 'The graph provides information regarding changes in... between [year] and [year].' Paraphrase by swapping the verb ('shows' → 'depicts/illustrates'), the noun ('the number of' → 'figures for'), and rearranging clauses. Overview must capture the big picture without numbers: identify the highest line, the lowest line, the steepest change, and whether overall trends rose, fell, or fluctuated. Template: 'Overall, [X] showed an upward trend throughout the period, while [Y] experienced the opposite.' Group lines logically—either by trajectory (rising vs falling) or by similarity (lines that move together).
Trend vocabulary is essential: rose, climbed, surged, soared, peaked at, reached a high of vs declined, decreased, dropped, plunged, bottomed out at, hit a low of. For stable periods: remained stable, leveled off, plateaued, stayed constant. For fluctuation: fluctuated, oscillated, varied. Modify with adverbs of degree: sharply, dramatically, significantly, considerably vs gradually, steadily, slightly, marginally.
Convert verbs to nouns to vary structure: 'There was a sharp rise in...' / 'X witnessed a dramatic increase.' Always cite specific data points (with units and years) when describing peaks, troughs, and starting/ending values. Comparison transitions: 'In contrast,' 'Conversely,' 'Meanwhile,' 'By comparison.' Sequence transitions: 'From [year] to [year],' 'Subsequently,' 'In the following decade,' 'By the end of the period.' For projections (future years on the graph), use future forms: 'is expected to,' 'is projected to,' 'will likely.' Mix tenses appropriately—past simple for historical data, future for forecasts. End the second body paragraph naturally; do not write a conclusion. Aim for 170–190 words to give yourself a buffer above the 150 minimum.
Task Achievement: examiners reward accurate trend description, correct figures at key points (start, end, peak, trough), and a clear overview that summarizes without raw data. Missing the overview caps you at Band 5. Coherence & Cohesion: chronological or thematic ordering of body paragraphs, smooth transitions between time periods, and clear paragraph breaks. Lexical Resource: variety in trend verbs and adverbs is heavily rewarded; repeating 'increase' lowers your score. Use noun-verb conversions for flexibility. Grammatical Range & Accuracy: prepositions of change (rise BY 10%, rise TO 50, rise FROM X TO Y) must be precise. Use present perfect for trends extending to now, past simple for completed periods, and articles correctly with figures.
Tactical content is original synthesis based on these public IELTS prep resources.