20 Common IELTS Mistakes and How to Avoid Every One of Them

Why it costs marks: Two-part questions — such as 'Discuss both views AND give your own opinion' — require explicit responses to every part. Answering only one instruction caps the Task Response criterion at Band 5, regardless of how well-written the rest of the essay is.

Fix: Before writing, underline every instruction in the question prompt. Write a brief plan that maps each instruction to a specific section of your essay. Check your introduction and conclusion address every part.

Why it costs marks: 'To what extent do you agree?' requires a clear, consistent stance. Vague responses such as 'I partly agree in some ways' fail the Task Response criterion because the position is neither maintained nor developed.

Fix: Choose a definite position before you write: fully agree, strongly disagree, or partial agreement with an explicit qualification. State it clearly in your introduction, develop it in your body paragraphs, and restate it in your conclusion. Never contradict it mid-essay.

Why it costs marks: 'This is a big problem in modern society' is a Band 5 generalisation. The Band 7 descriptor requires ideas that are 'relevant, extended and supported'. Every main argument requires development — not assertion.

Fix: For every main argument, add two layers: one explanation (why is this true?) and one specific example (a country, policy, statistic, scenario, or real-world case). The example can be approximate — IELTS is not an exam of factual knowledge — but it must be concrete.

Why it costs marks: Set-piece phrases such as 'In this day and age', 'Every coin has two sides', and 'Since time immemorial' are explicitly penalised under Lexical Resource as 'apparently memorised language'. Examiners recognise them immediately.

Fix: Internalise collocations and functional phrase structures rather than complete sentences. The goal is flexible deployment of genuine vocabulary knowledge — not recitation. A minor error in naturally produced language scores higher than a flawlessly delivered template phrase.

Why it costs marks: Many candidates write five or more short paragraphs without clear topic sentences, or produce one long unbroken block of text. Both patterns score poorly for Coherence and Cohesion.

Fix: Use a four-paragraph structure: introduction, body paragraph 1, body paragraph 2, conclusion. Each body paragraph must begin with a topic sentence that states the main idea of that paragraph clearly. Every sentence that follows must relate directly to that main idea.

Why it costs marks: Responses below 250 words are explicitly penalised under Task Response — this can reduce the overall Writing band by a full point. The instruction is unambiguous, and the examiner counts.

Fix: Count words consistently in every practice essay. A well-developed Band 7 essay typically falls between 265 and 290 words. If you are regularly producing short responses, you are likely under-developing your examples or writing single-sentence body paragraphs.

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Why it costs marks: Writing 'The graph shows the number of tourists who visited five countries between 2000 and 2020' as your opening sentence scores Band 4 for Task Achievement. It demonstrates no paraphrasing ability and no command of vocabulary.

Fix: Paraphrase the task using different vocabulary and a different grammatical structure. Change nouns to synonyms, restructure the syntax, and replace verbs with alternatives.

Why it costs marks: Without a clear overview summarising the most significant features, a Task 1 response cannot exceed Band 5 for Task Achievement. The overview is not optional — it is the primary marker of a Band 6+ response.

Fix: Write a two-sentence overview as the second paragraph, immediately after the introduction. Identify the two or three most striking trends — the highest value, the largest change, the clearest pattern — without citing specific figures. Save the data for your detail paragraphs.

Why it costs marks: Listing every figure in the chart without selecting and grouping data signals that the candidate cannot identify key features. This is penalised under Task Achievement and also results in repetitive, low-cohesion writing.

Fix: Select and group. Choose two or three main trends; group countries or time periods with similar behaviour and describe them together. Compare rather than list. 'Countries A and B both peaked in 2015' is more analytically sophisticated than two separate sentences stating each country's 2015 figure.

Why it costs marks: Using the present tense to describe a bar chart showing historical data (e.g. 2010–2020 figures) is a grammatical error. Using the past tense for a process diagram is equally incorrect.

Fix: Use past simple for charts depicting completed time periods. Use present simple for data described as current or for timeless information. Use timeless present for process diagrams describing how something works. When in doubt, check whether the time period shown on the chart has ended.

Why it costs marks: 'Do you enjoy reading?' answered with 'Yes.' gives the examiner nothing to assess across any of the four Speaking criteria. Short answers in Part 1 are one of the most common causes of a low Fluency and Coherence score.

Fix: Use the AREA framework: Answer, Reason, Example, Alternative or expansion. Aim for three to four sentences per Part 1 answer. Practise responding to common Part 1 topics until extended answers feel automatic.

Why it costs marks: Examiners detect memorised responses through unnatural intonation, an overly formal register in Part 1 (which should sound conversational), and responses that do not quite address the specific wording of the question asked.

Fix: Internalise vocabulary banks and structural frameworks, not complete answers. A natural, spontaneous response with occasional minor errors consistently scores higher than a memorised script delivered with perfect surface accuracy.

Why it costs marks: Anxiety causes many candidates to rush, which increases grammatical errors, compromises pronunciation clarity, and makes it harder for the examiner to assess fluency accurately. Paradoxically, speaking quickly often lowers the Fluency score rather than raising it.

Fix: Record yourself during practice and listen critically for pace. Deliberately slow your delivery during the first 30 seconds of each part — this regulates pace throughout. Pausing briefly before answering a question is normal, natural, and is not penalised.

Why it costs marks: 'Do you think governments should protect the environment?' answered with 'Yes, I think so' leaves nothing for the examiner to assess. Part 3 is specifically designed to test extended, reasoned discourse.

Fix: Use the OJE framework: Opinion, Justify, Example. State your view clearly in one sentence, explain why in one or two sentences, and support it with a specific example. Minimum three sentences per Part 3 response.

Why it costs marks: Short pauses between sentences signal low Fluency and Coherence to the examiner, even when individual sentences are grammatically accurate. Disconnected delivery reduces the overall impression of fluency significantly.

Fix: Build connective habits by practising transition phrases that extend your turn naturally: 'and what is more...', 'which brings me to the point that...', 'having said that...', 'beyond that...'. These give your speech forward momentum and fill the space where silence would otherwise appear.

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Why it costs marks: Spending 25–30 minutes on Passage 1 is one of the most predictable causes of a low Reading score. Passages 2 and 3 are typically harder and contain more marks — giving them insufficient time disproportionately damages your score.

Fix: Enforce a maximum of 20 minutes per passage during every practice test. If you are stuck on a question, mark it and move on immediately — never spend more than 90 seconds on a single question. Return to skipped questions only if time permits after completing the section.

Why it costs marks: Both False and Not Given involve the statement not being confirmed by the passage — but they are fundamentally different. Confusing the two is one of the most common sources of errors in Academic Reading Passages 2 and 3.

Fix: Ask one question: does the passage say the OPPOSITE of the statement? If yes — False. If the topic simply does not appear in the passage, or is mentioned without direct contradiction — Not Given. Never use outside knowledge. Never infer beyond what the text explicitly states.

Why it costs marks: 'NO MORE THAN TWO WORDS AND/OR A NUMBER' means exactly that. A three-word answer scores zero marks, even if it is otherwise accurate. This is a discipline issue — candidates know the rule but fail to apply it under pressure.

Fix: Count your answer words before writing them on the answer sheet. Make this a habit in every practice session. If the correct phrase is three words, identify which two are sufficient. Articles and prepositions can often be omitted without loss of accuracy.

Reading strategy: skim, then scan, then read

Why it costs marks: A single incorrect letter in a Listening answer scores zero marks, regardless of how clearly the candidate heard the word. Spelling is not an afterthought — it is assessed as part of Listening accuracy.

Fix: Drill the 30 most commonly misspelled IELTS Listening words as a targeted exercise: receive, accommodation, separate, necessary, government, environment, February, parliament, guarantee, committee, privilege, restaurant, occasion, immediately, approximately, independent, temperature, permanent, profession, voluntary. Write each misspelled word ten times by hand after each practice test.

Why it costs marks: After missing a Listening answer, many candidates continue trying to reconstruct or guess what was said — while the recording moves on. This typically converts one missed answer into two.

Fix: Accept the loss immediately. The moment you realise you have missed an answer, look at the next question and redirect your attention forward. In the transfer time at the end of each section, return to any blank or uncertain answers and make your best guess — never leave an answer blank.

One technique that prevents most Listening errors

Further reading:

• IELTS Writing Task 2 Complete Guide
• IELTS Speaking Complete Guide
• IELTS Reading Complete Guide
• Full IELTS Mock Test