A real grammar library
Hundreds of study notes covering sentence structure, tenses, cohesion, vocabulary, and the errors examiners notice most — written in plain language and linked together so one lesson leads to the next.
Band 9 Vault turns scattered IELTS preparation into one connected study space: structured grammar notes, full listening and reading mock tests with instant band scores, and short daily drills that keep your weak spots from becoming exam-day surprises.
Free to use · No card needed · Your scores follow you to every device
Hundreds of study notes covering sentence structure, tenses, cohesion, vocabulary, and the errors examiners notice most — written in plain language and linked together so one lesson leads to the next.
Sit complete listening tests with real audio, or reading papers with the passage beside the questions as in the real exam. Both are timed and marked for you, with a band estimate the moment you finish and the exact questions you slipped on.
Short, focused practice for spelling, True/False/Not Given reading, error correction, and vocabulary recall — small enough to finish in a break, frequent enough to actually stick.
Every test and drill is recorded against your account, so you can watch your listening score climb instead of guessing whether the studying is working.
Take a mock test or a quick drill. Your first score tells you where the real weakness sits.
Follow the connected notes for that skill instead of reading everything in a random order.
Return to practice, watch the score move, and repeat until the skill feels automatic.
Sentence structure, tenses, articles, prepositions, linking words, collocations, and the error patterns that quietly cap your writing band. Every note is a page you can read, save, and return to.
Open the library → How it worksTest first, read the result, fix the grammar behind the mistakes, then test again. Five steps that tell you what to study now and what can safely wait.
See the five steps →IELTS listening is marked out of 40, and the raw score converts to a band from 0 to 9. Every mock test in Band 9 Vault scores you on this scale, so you always know how far the next half-band actually is.
| Correct answers | Band score | What it means |
|---|---|---|
| 39–40 | 9.0 | Expert listener — almost nothing slips past you. |
| 37–38 | 8.5 | Very high accuracy, occasional spelling loss. |
| 35–36 | 8.0 | Strong enough for competitive university entry. |
| 32–34 | 7.5 | Above the bar for most postgraduate courses. |
| 30–31 | 7.0 | The common requirement for study and migration. |
| 26–29 | 6.5 | Solid, but distraction and paraphrase still cost you. |
| 23–25 | 6.0 | Meets many undergraduate requirements. |
| 18–22 | 5.5 | Detail and spelling are the usual leaks here. |
| 16–17 | 5.0 | Foundation work will move this fastest. |
| 13–15 | 4.5 | Focus on vocabulary and number/date recognition. |
These bands are the widely published conversion for IELTS Academic listening and are used here as an estimate. Your official band comes only from a real test sitting.
No coaching centre, no fixed schedule. You need material that is ordered for you and practice that marks itself, because nobody else is going to check your answers.
You already know the test format. What you need is to find the specific skill holding the score at 6.5, and drill it until it stops leaking marks.
Preparation has to fit around a job or a degree. Short drills and saved progress mean a ten-minute session still counts toward the target.
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You can practise as a guest, but results stay in that one browser. Signing in keeps your progress on every device you study from.
No. This is an independent study site with practice material only. It is not affiliated with or endorsed by the British Council, IDP Education, or Cambridge University Press & Assessment.
IELTS Academic. The grammar, vocabulary, and listening material also helps General Training learners, but the writing and strategy notes target the Academic paper.
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Band 9 Vault brings grammar, vocabulary, listening mock tests, and daily drills into one connected study space, so preparation turns into exam-day confidence.
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A focused route from where you are now to confident, exam-ready English.
Band 9 Vault is a free, independent study site for IELTS Academic. It exists because IELTS preparation is usually scattered across a dozen places: grammar in one book, listening audio on a video site, vocabulary in a notebook, and no record of what is actually improving.
Everything sits in one place and is connected. Study notes cover sentence structure, tenses, cohesion, vocabulary, punctuation, and the errors examiners notice most. Full listening and reading mock tests run on the real clock and mark themselves the moment you submit. Short drills cover spelling, True/False/Not Given reading, error correction, and vocabulary review. Every result is recorded, so the site can tell you where you actually stand rather than where you feel you stand.
Learners who are somewhere around Band 6 or 6.5 and need to reach 7 or higher, especially those studying alone without a teacher to mark their work. The material assumes you already speak some English and want the specific gaps closed, not a beginners' course.
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This is not the official IELTS test and not an official practice product. It is not affiliated with, endorsed by, or connected to the British Council, IDP Education, or Cambridge University Press & Assessment, who jointly own the IELTS trade mark. Band scores shown here are estimates for practice, not official results.
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Everything learners ask most often, answered plainly. If yours is not here, write to us.
No. Band 9 Vault is free to use, and no part of it is held back for a paid tier. An account exists so your scores and saved notes stay with you rather than in one browser.
You can practise as a guest, but results stay in that one browser and are lost if you clear it. Signing in keeps your progress on every device you study from.
No. This is an independent study site with practice material only. It is not affiliated with, endorsed by, or connected to the British Council, IDP Education, or Cambridge University Press & Assessment, who jointly own the IELTS trade mark.
IELTS Academic. The grammar, vocabulary, and listening material also helps General Training learners, but the writing and strategy notes target the Academic paper.
Yes. A listening test runs 40 questions with real audio on a 32-minute countdown, and a reading paper gives you three passages and 40 questions in 60 minutes. Both match the computer-delivered format and mark your answers the moment you submit.
Your correct answers out of 40 are converted using the standard IELTS band table for that paper — the listening table, or the Academic reading table, which is marked slightly harder. A paper with fewer than 40 questions is put on the 40-question scale first, so every band means the same thing. It is an estimate for practice, not an official result.
Most learners moving half a band need four to eight weeks of consistent practice, and a full band usually takes longer. Steady daily drills move the score faster than occasional long sessions.
Take one mock test before studying anything, so you have a real number to work from. The How it works page sets out the whole order, and why testing first beats reading first.
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The clock keeps running against the original finishing time, and your answers are still there when you come back, exactly as the real computer-delivered test behaves. Only a submitted paper is recorded as a result.
Tell us. Send the test number and the question number to our contact address and it will be checked and corrected. Practice material collected from elsewhere sometimes carries mistakes, and we would rather fix them than leave learners doubting themselves.
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Most people open a study site, read three pages, and never come back, because nothing tells them what to do first. Here is the order that works, and why.
This feels backwards, and it is the most useful thing you can do. A listening or reading paper takes under an hour and gives you a number. Without that number you are guessing at your own level, and learners almost always guess wrong in one direction or the other. Do not revise for it. A score that flatters you is worth nothing.
After you submit, every question is listed with your answer beside the right one. Do not skim it. Go through the ones you got wrong and put each into a group: did you mishear the word, not know the word, misread the question, or run out of time? Four different problems, four different cures. Most learners discover that one group is far larger than the rest, and that group is your real work.
The note library is arranged by what actually goes wrong, not by chapter order. If your errors are tenses, start with the tense notes; if sentences fall apart in writing, start with clauses. Save a note with the star and it waits for you on your profile. Reading a note you do not need is time you did not spend on the one you do.
Ten minutes of spelling, True/False/Not Given, error correction, or vocabulary review beats a three-hour session at the weekend. The vocabulary drill schedules each word to come back just before you would have forgotten it, so the words you find hard return more often than the ones you know.
After a week or two of drills, sit another paper. Your profile keeps every result with its band, so you can see whether the line is moving. If two papers in a row show no change, the problem is not effort — it is that you are practising the wrong thing, and step 2 needs doing again.
Half a band usually takes four to eight weeks of steady practice. A full band takes longer. Anyone promising faster than that is selling something. What moves the number is consistency: a short session most days beats a long one now and then, every time.
The band you see is your correct answers converted with the standard IELTS band table for that paper. It is an honest estimate for practice, not an official result, and the real exam has pressures a practice paper cannot copy. Treat it as a direction, not a promise.
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| Pair | Definition/Use | Example | IELTS Band | Common Error |
|---|---|---|---|---|
| Their / There / They're | Possessive / Location / Contraction | "Their research" vs "There exists" vs "They're testing" | 6→8 | Using "there" for possession |
| Its / It's | Possessive / Contraction | "Its impact" vs "It's important" | 6→8 | Common confusion |
| Accept / Except | Receive / Exclude | "Accept findings" vs "Except children" | 6→7 | Reversing usage |
| Effect / Affect | Noun (result) / Verb (influence) | "Effect of policy" vs "affects communities" | 6→8 | Fundamental confusion |
| Then / Than | Time / Comparison | "Back then" vs "More than before" | 6→7 | Spelling sound confusion |
| To / Too / Two | Preposition / Also/Excess / Number | "To school" vs "too difficult" vs "two factors" | 6→7 | Sound confusion |
| Principle / Principal | Rule / Leader/Main | "Guiding principle" vs "principal investigator" | 7→8 | Spelling confusion |
| Loose / Lose | Not tight / Misplace | "Loose data" vs "lose progress" | 6→7 | Sound similarity |
THEIR = Possessive adjective (belongs to them)
Their research demonstrates clear patterns.
The study influences their methodology.
THERE = Location/Existence
Data exists there in the appendix.
There are multiple factors at play.
THEY'RE = They are (contraction, avoid in formal writing)
They're conducting research → AVOID in IELTS academic writing
Use instead: "They are conducting research"
"Researchers use there data to support there conclusions."
(Using "there" for possession × 2 = major error)
"Researchers analyzed their dataset, establishing that geospatial variation existed there, with strong correlation patterns evident in their subsequent analyses."
THEIR = possessive + ending "ir" like "mine/your" THERE = location + "here" at end (here/there) THEY'RE = contraction, E = equals "are"
ITS = Possessive (belongs to it)
The study's methodology is described in its introduction.
Each dataset has its own limitations.
IT'S = It is (contraction, formal writing should replace)
It's important → AVOID; use "It is important"
It's been established → Use "It has been established"
"The data lost it's relevance because it's values were inconsistent."
(Using "it's" for possession x2 = critical error)
"Although the methodology retains its original specifications, it is increasingly evident that its application demands contextual modification."
ITS = possessive, like "his" or "her" (no apostrophe) IT'S = Always equals "it is" or "it has" (test: expand to check)
"The organization improved its [its/it's] efficiency."
Expand: "The organization improved it is efficiency" ✗
Therefore use: ITS ✓
ACCEPT = Receive/Agree to (verb)
Researchers accepted the findings.
The committee accepted the proposal.
EXCEPT = Excluding/Apart from (preposition/conjunction)
All participants except the control group...
Everyone accepted except those aged under 16...
"We except the findings from the study."
(Wrong: should "accept")
"The methodology accepted by the institution, except where specific contextual constraints necessitated protocol modification."
ACCEPT = get/receive (verb) + C for "acquire" EXCEPT = exclude/exclude (preposition) + X for "exclude"
EFFECT = Result/Outcome (noun—90% of cases)
The effect of policy...
Environmental effects include...
AFFECT = Influence/Impact (verb—90% of cases)
Climate change affects communities.
Policies that affect outcomes...
!> EXCEPTION: "effect" (verb) = "to bring about/create" (rare in academic writing)
"The affects of climate change are significant."
(Wrong: should "effects"; mixing noun/verb)
"Longitudinal analysis demonstrates cumulative effects, with socioeconomic factors significantly affecting behavioral parameters across demographic cohorts."
EFFECT = End result (E = Effect = End) AFFECT = Action/Activity (A = Affect = Action)
"Climate change [affects/effects] agriculture."
Test: Is this talking about the RESULT? (effects) or the INFLUENCE? (affects)
Answer: INFLUENCE → AFFECTS ✓
THEN = At that time/Next (adverb)
Back then, research methods were limited.
Research design, then analysis, then writing...
THAN = Comparison (conjunction)
More significant than...
Faster than previous studies...
"The approach was less effective then conventional methods."
(Wrong: should "than" for comparison)
"Contemporary methodology proves more rigorous than antecedent approaches; quantitative rigor then preceded qualitative integration."
THEN = Time/Sequence (E = Event/time) THAN = Comparison (A = Alternative)
TO = Toward/For/Infinitive (preposition/particle)
Research pointing to...
Contribute to outcomes...
To analyze → infinitive
TOO = Also/Excessive (adverb)
This factor too influences outcomes.
Complexity too high for Band 6...
TWO = Number 2
Two primary factors...
"The two factors are to important too ignore."
(Should: "to" ignore / "to" important / "two" factors = got all three wrong!)
"These two divergent methodologies contribute equally to theoretical advancement, while socioeconomic factors prove equally significant too."
TO = toward/toward (T + O like "toward") TOO = also/also (TOO = extra O = extra/also) TWO = 2 (T-W-O contains W like "tWo")
PRINCIPLE = Rule/Law/Moral code (noun)
Guiding principles of research...
Ethical principles demand transparency...
PRINCIPAL = Leader/Main/Highest (noun/adjective)
Principal investigator...
The principal concern...
"The principal reason relates to core principals of sustainability."
(Wrong: should "principle" for "principals")
"The principal investigator's research articulates fundamental principles governing institutional behavior, with epistemological rigor as the principal determinant of methodological validity."
PRINCIPLE = Rule (E = Ethics/Law) PRINCIPAL = Leader/Main (A = Authority/Admin)
LOOSE = Not tight/Relaxed (adjective)
Loose framework...
Loose interpretation...
LOSE = Misplace/Fail to win (verb)
Lose data...
Lose focus...
"Don't lose your connection; keep your grip loose."
(Actually correct usage—but often confused)
Common error:
"The analysis became lose (should "loose" if describing state)."
"Interpretive frameworks loose in specificity often lose methodological rigor, necessitating operational definition enhancement."
LOOSE = Not tight (LOOSE = extra O = relaxed) LOSE = Go missing (LOSE = has E = loses something)
ADVICE = Recommendation (noun)
Expert advice suggests...
The researcher's advice proved...
ADVISE = Recommend/Counsel (verb)
Studies advise caution...
Experts advise implementing...
"I will advise you some advice about research."
(Wrong: "I will advise you some advice" is nonsensical mixing)
"Contemporary literature advises institutional caution, while expert advice regarding methodological rigor increasingly emphasizes longitudinal validation."
ADVICE = noun (C = noun, like "practice") ADVISE = verb (S = verb, like "comprises")
RISE = Go up/Increase (intransitive verb—no object needed)
Temperatures rise...
Outcomes rose significantly...
RAISE = Lift/Elevate/Increase (transitive verb—requires object)
Raise awareness...
Raise standards...
"We need to rise standards and rise awareness."
(First should be "raise"; second correct)
"As empirical rigor rose across institutions, researchers raised methodological standards, subsequently elevating entire disciplinary expectations."
RISE = go up (intransitive, no object) = "The sun rises" RAISE = lift up (transitive, needs object) = "Raise the bar"
| Pair | Distinction | Example | Common Error |
|---|---|---|---|
| Stationary / Stationery | Not moving / Writing supplies | "Research remains stationary" vs "office stationery" | Using either for both |
| Compliment / Complement | Praise / Complete | "Compliment findings" vs "Complement the study" | Reversing usage |
| Weather / Whether | Climate / If | "Research despite weather" vs "Whether or not" | Spelling confusion |
| Quiet / Quite | Silent / Rather/Very | "Keep quiet" vs "Quite significant" | Sound similarity |
| Right / Write / Rite | Correct/Direction / Compose / Ceremony | "Right approach" vs "write paper" vs "ritual rite" | High-speed typing errors |
| Sight / Site / Cite | Vision / Location / Reference | "Sight of data" vs "research site" vs "cite sources" | Three-way confusion |
| Passed / Past | Completed/Overtook / Previous time | "Research passed review" vs "Past studies" | Tense confusion |
| Peace / Piece | Calm/Treaty / Part | "Peace of mind" vs "piece of data" | Sound confusion |
| Break / Brake | Fracture/Pause / Stop | "Break the analysis" vs "brake the process" | Spelling confusion |
| Mail / Male | Correspondence / Gender | "Check mail" vs "male subjects" | Gender/noun confusion |
COMPARE TO = Show similarity/resemblance
Compare technology to traditional methods (showing resemblance)
COMPARE WITH = Examine differences and similarities
Compare this methodology with alternative approaches (detailed analysis)
Band 6 Error: Treats as same Band 8: "Comparative analysis examines the methodology alongside alternative approaches, contrasting outcomes to reveal substantive distinctions."
CONTINUE = Resume/Keep doing (verb)
Research will continue...
CONTINUOUS = Uninterrupted (adjective)
Continuous monitoring...
CONTINUAL = Recurring regularly (adjective)
Continual improvements...
Band 6 Error: Uses "continuous" for everything Band 8: "Continuous measurement protocols enable detection of continual refinements, allowing researchers to continue longitudinal observation."
AMOUNT = Uncountable nouns (mass)
Amount of data...
Amount of research...
NUMBER = Countable nouns (individual units)
Number of studies...
Number of factors...
Band 6 Error: "number of research" (research uncountable) Band 8: "The amount of empirical investigation contrasts with the number of institutions capable of implementation."
FURTHER = Abstract distance / Additional
Further research...
Further implications...
FARTHER = Physical distance
Geographically farther...
Band 6 Error: "farther research" (should "further") Band 8: "While conceptual frameworks extend farther than previous models anticipated, requiring further methodological development..."
LESS = Uncountable (mass)
Less pollution...
FEWER = Countable (individual)
Fewer participants...
Fewer studies...
Band 6 Error: "less factors" (should "fewer") Band 8: "Despite fewer institutional resources, environmental degradation continues unabated, suggesting less data accessibility compromises understanding."
For each sentence, identify the correct word:
Error Classification: Error Classification System
Transformation Patterns: Error Transformation Patterns
Vocabulary Foundation: Collocations Bank, SynonymsUpgradeBand7to8
Writing Application: POS in Writing Application
Specific Error Types: Word Form Errors