IELTS Writing Task 1 Problem: How to Describe Trends

Quick Answer: The main problem in describing trends is using repetitive vocabulary and incorrect grammar for changes over time. You need to master verbs like rise, fall, fluctuate, and adverbs like sharply, gradually, and structure your overview and details clearly. This guide will show you exactly how to fix these issues and achieve a Band 7+.

Table of Contents

Understanding the Problem

Key Vocabulary for Trends

Grammar: Tenses and Prepositions

Structure for Task 1

Band Score Comparison Table

Understanding the Problem

Many IELTS candidates panic when they see a line graph, bar chart, or table showing data over time. The most common issue? They either lack the vocabulary to describe changes or they use the same words (increase, decrease) repeatedly. Examiners look for lexical range and grammatical accuracy when describing trends. Without these, your score stays at Band 6 or below.

Another problem is structure. Students often write a long list of numbers without any overall summary. The examiner wants to see an overview that highlights the main trends, followed by specific details with comparisons.

Key Vocabulary for Trends

To describe trends effectively, you need a mix of verbs, nouns, adjectives, and adverbs. Here are the essential categories:

Verbs (Upward trends)

rise, increase, grow, go up, climb, surge, soar (sharp rise), rocket (very sharp)

Example: The number of tourists rose steadily from 2000 to 2010.

Verbs (Downward trends)

fall, decrease, decline, drop, go down, plunge (sharp fall), plummet (very sharp)

Example: Sales plummeted in 2008 due to the recession.

Verbs (Stable / Fluctuating)

remain stable, stay constant, level off, plateau, fluctuate, vary

Example: The rate of unemployment fluctuated between 5% and 7%.

Adjectives & Adverbs (Describing speed/degree)

Adjectives: sharp, dramatic, significant, moderate, slight, gradual, steady

Adverbs: sharply, dramatically, significantly, moderately, slightly, gradually, steadily

Example: There was a sharp increase in oil prices. / Oil prices rose sharply.

Nouns (for trend phrases)

rise, increase, growth, surge, fall, decline, drop, decrease, fluctuation

Example: The rise in internet usage was remarkable.

Grammar: Tenses and Prepositions

Choosing the correct tense

Past tense for data from a completed time period (e.g., 1990–2010): The population rose from 1 million to 2 million.

Present perfect for trends from the past to the present if the data includes the current year: Sales have increased sharply since 2015.

Future forms (will, is projected to) for predictions: The number of cars is expected to rise to 500 million by 2030.

Prepositions of time and change

from X to Y (for a range): grew from 10% to 25%

by (for the amount of change): increased by 15%

at (for a specific point): stood at 50% in 2000

over/in (for time period): over the next decade, in the last five years

Structure for Task 1

A well-structured answer will help you organise your trends logically. Use this four-paragraph model:

Introduction – Paraphrase the question. Never copy the words exactly.

- The line graph illustrates changes in the number of international visitors to Japan between 1990 and 2020.

Overview – One or two sentences summarising the main trends (highest, lowest, overall direction). Do not include specific numbers here.

- Overall, the number of visitors increased significantly over the period, with the steepest rise occurring after 2005.

Body paragraph 1 – Describe the first main trend or group of data (e.g., upward trend).

- From 1990 to 2000, visitor numbers rose gradually from 2 million to 4 million. This was followed by a period of rapid growth…

Body paragraph 2 – Describe the second trend or remaining data (e.g., fluctuations, comparisons).

- In contrast, the number of visitors from China remained stable until 2005, after which it surged dramatically…

Band Score Comparison Table

Band	What Examiner Wants
6	Uses basic vocabulary (increase, decrease) with some repetition; simple sentence structures; overview present but may be unclear or include numbers.
7	Uses a range of less common vocabulary (rise, fall, fluctuate, plateau); adverbs like sharply, gradually; correct tenses; clear overview.
8	Uses a wide range of precise vocabulary (soar, plummet, level off, dip); complex structures (e.g., which saw a dramatic increase); accurate comparisons and data grouping.
9	Fully flexible vocabulary; sophisticated structures; perfect tense usage; seamless overview; all trends described with precision and no errors.

Sample Answers

Graph context: The line graph shows the number of books sold (in thousands) by a bookstore from 2010 to 2020. Band 7: The line graph illustrates the number of books sold by a store between 2010 and 2020. Overall, sales increased significantly over the period, although there were some fluctuations. In 2010, sales stood at 10,000. They rose gradually to 15,000 by 2013. After a slight dip in 2014 to 14,000, sales increased sharply to 25,000 in 2016. Then sales fluctuated before reaching a peak of 30,000 in 2020. Band 8: The line graph depicts the sales figures of a bookstore (in thousands of books) from 2010 to 2020. Overall, the number of books sold experienced a substantial upward trend, with the most dramatic growth occurring after 2016. In 2010, sales were at 10,000, after which they climbed steadily to 15,000 by 2013. Following a minor drop to 14,000 in 2014, sales soared to 25,000 in 2016. The figures then fluctuated between 22,000 and 28,000 before eventually reaching a peak of 30,000 in 2020. Band 9: The line graph charts the number of books sold by a bookstore (in thousands) over the decade from 2010 to 2020. Overall, the period witnessed a remarkable surge in sales, which more than tripled, with the most pronounced acceleration evident after 2016. Commencing at 10,000 in 2010, sales rose steadily, reaching 15,000 by 2013. A marginal decline to 14,000 in 2014 was quickly reversed, and sales then rocketed to 25,000 in 2016. The subsequent years saw a period of volatility, with figures oscillating between 22,000 and 28,000, before culminating in an all-time high of 30,000 in 2020.

Common Mistakes

❌Using only "increase" and "decrease" – Makes your writing repetitive and limited. Always use synonyms (rise, climb, soar, fall, drop, plunge).

❌Forgetting the overview – You must include a general summary of the main trends. Without it, your Task Achievement score drops.

❌Wrong tense for time periods – Using present tense for past data (e.g., sales increase in 1990). Always use past tense unless the data includes the current year.

❌Listing every single data point – Group data and describe trends, not individual numbers. For example, say rose steadily instead of increased from 10 to 12, then to 15, then to 18.

Top Tips

💡 Start with a strong overview. Identify the biggest change, the highest/lowest point, and the overall direction. This shows the examiner you can see the "big picture."

💡 Use a variety of sentence structures. Mix simple sentences, compound sentences, and complex sentences (e.g., The number of cars rose steadily, while the number of bicycles fell sharply).

💡 Always check your data. Misreading a number or mixing up years can drop your Task Achievement score. Double-check the graph before writing.

Resources

Check out IELTS Active for practice tests and study materials. They offer timed exercises and model answers for all types of Task 1 graphs.

FAQ

Q: How do I describe a plateau or a period of stability? A: Use phrases like remained stable, leveled off, stayed constant, or plateaued. For example: The unemployment rate plateaued at 5% between 2012 and 2015. Q: What tense should I use for a graph that covers past and future? A: Use past tense for historic data, present perfect for data up to the present, and future forms (e.g., is predicted to rise, is expected to climb) for projections. For example: Sales rose until 2020, and they are projected to continue increasing. Q: Should I include specific numbers in the overview? A: No. The overview should summarise the general trend without precise figures. Save numbers for the body paragraphs. For example, correct: Overall, sales increased dramatically. Incorrect: Overall, sales increased from 10 to 30. Q: How can I describe a trend that goes up and down? A: Use the verb fluctuate or phrases like experienced a series of ups and downs. For example: The number of visitors fluctuated wildly throughout the decade, with peaks in 2005 and 2010.

Key Takeaways

✅Build a strong vocabulary bank of trend-related verbs, nouns, adjectives, and adverbs.

✅Always write a clear overview that highlights the main trend (up, down, stable, fluctuating).

✅Use correct tenses (past for completed periods, future for predictions).

✅Group data logically and avoid listing every single point.

Related Posts:

[IELTS Writing Task 1: How to Compare Data Effectively]

[Common Grammar Mistakes in IELTS Task 1 (and How to Fix Them)]

[IELTS Writing Task 1 Vocabulary: The Ultimate List]