IELTS Vietnam - Complete Guide for 2025

Writing Task 1 is the section learners most often underestimate, yet it is highly learnable because it follows predictable patterns. What you write depends on your version: Academic candidates describe visual data, while General Training candidates write a letter. This complete guide explains both, with concrete methods and worked structures, so Vietnamese learners can approach Task 1 with a clear plan rather than guesswork.

Want expert help putting this into practice? IELTS Vietnam can guide you through it.

Two versions, two very different tasks

Before anything else, know which Task 1 you face, because they share almost nothing except the time and word count.

• Academic Task 1 gives you a chart, graph, table, map, or process diagram and asks you to describe the key information in your own words.
• General Training Task 1 gives you a situation and asks you to write a letter, which may be formal, semi-formal, or informal depending on who you are writing to.

Both ask for at least 150 words and should take about 20 minutes, leaving the bulk of your writing time for the more heavily weighted Task 2. Confirm your version early so you practise the right task.

Practising the wrong version is a surprisingly common waste of effort. A learner heading to university who spends months writing letters, or a migration applicant who drills chart description, arrives at the test prepared for a task they will never see. Because the two Task 1 formats share almost no skills, checking your requirement before you build a study plan is not a formality; it is the difference between targeted preparation and wasted months. When in doubt, confirm directly with the institution or authority you are applying to.

Academic Task 1: describe, do not explain

Related: ieltsvietnam - Best Practices for Success.

The core rule for Academic Task 1 is that you report what the data shows; you do not explain why or give opinions. Your job is to select and describe the most important features clearly and accurately.

• Read the axes, units, and time periods carefully before writing a word.
• Identify the main trends or biggest differences, since you cannot describe every number.
• Group related data together rather than listing every figure in isolation.

A reliable structure is an introduction that paraphrases the question, an overview sentence stating the main trends or standout features, and one or two body paragraphs giving specific supporting detail with figures. The overview is essential; without a clear summary of the big picture, your score is capped.

Different visuals need slightly different framing. A line graph over time calls for trend language; a bar chart or table often calls for comparison; a pie chart calls for proportions; a map asks you to describe changes in location and layout; and a process diagram asks you to describe stages in sequence using the passive and time markers like "first", "then", and "finally". Identify the visual type first, because it decides which language toolkit you reach for.

Academic Task 1: the language of data

Describing data well means using precise language for change, comparison, and proportion. Build a toolkit and use it accurately.

• Trends: rose, fell, increased, declined, peaked, levelled off, fluctuated.
• Degree: sharply, gradually, slightly, steadily, dramatically.
• Comparison: higher than, twice as many as, the largest, the least.
• Approximation: around, just over, nearly, approximately.

Use a range of tenses correctly according to the time in the data, and vary your sentence structures. A worked example: instead of "In 2010 it was 20 and in 2015 it was 40," write "The figure doubled over the five-year period, rising from around 20 to 40." The second sentence shows comparison, approximation, and a complex structure at once.

General Training Task 1: match the tone to the reader

See also: IELTS Vietnam - Tips and Strategies for Success.

For General Training, the letter's tone is decided by who receives it. Getting the register right is a major part of the score.

• Formal: to someone you do not know, such as a manager or an official; use "Dear Sir or Madam" and a formal sign-off.
• Semi-formal: to someone you know in a professional way, such as a landlord or colleague.
• Informal: to a friend; a warm, relaxed tone with contractions is appropriate.

The prompt gives three bullet points telling you what to include. Cover all three, since missing one lowers your task achievement. Keep your purpose clear from the first line and stay consistent in tone throughout.

A common slip is mixing registers, such as opening a formal complaint with a casual greeting or slipping slang into an official request. Decide the tone at the start and hold it, including in your sign-off. Formal letters avoid contractions and use polite, indirect phrasing like "I would be grateful if"; informal letters to a friend can relax and use contractions freely. Consistency of tone is exactly what the examiner is checking.

General Training Task 1: a reliable letter structure

A clear letter is easy to build once you know the shape.

• Open with the correct greeting for the register.
• State your purpose in the first sentence so the reader knows why you are writing.
• Give one short paragraph for each of the three bullet points, developed with detail.
• Close appropriately, with a sign-off that matches the tone.

Develop each point rather than listing it in a single line; examiners reward extension. For a complaint, for example, do not just state the problem; explain its effect and say what you would like done about it.

Shared habits that lift both versions

Whichever Task 1 you take, the same good habits protect your marks.

• Meet the minimum of 150 words, but do not pad; every sentence should carry meaning.
• Watch the errors Vietnamese learners repeat: missing articles, dropped plurals, and wrong tenses.
• Paraphrase the prompt in your introduction rather than copying it word for word.
• Leave two minutes at the end to check for your habitual mistakes.
• Keep your time to about 20 minutes so Task 2 gets the attention it deserves.

Improve by writing Task 1 responses regularly and comparing them to strong model answers, noting the phrases and structures you can reuse. Log the errors you repeat so they fade with practice. No method guarantees a specific band, and writing improves gradually with feedback, so stay consistent and patient. For structured Task 1 practice and clear feedback designed for Vietnamese learners, IELTS Vietnam offers encouraging, practical support that helps you master both the data description and the letter with confidence.