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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Every learner gets the whole site. There is no locked section, no upgrade prompt, and nothing held back for a paid tier.
No. Band 9 Vault is free to use. An account exists so your scores and saved notes stay with you.
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.
Find the exact explanation, drill, or strategy you need today.
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.
The study notes are written for this site. The practice papers are collected from publicly available IELTS practice material so that learners have enough papers to work through; they are for private study only. If you own material used here and would rather it were removed, write to us and it will be taken down.
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.
Nothing. There is one plan, it is free, and no part of the site is held back for a paid tier. An account exists only so your results and saved notes follow you between devices.
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.
Yes. The site works in any modern mobile browser with no app to install, and because your progress is tied to your account you can start a drill on a phone and finish on a laptop.
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.
Yes. "Reset my data" on your profile clears your whole study record straight away, and emailing us removes the account itself along with everything attached to it. The privacy policy sets out exactly what is stored.
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.
Questions, mistakes you have spotted, a broken audio file, or a copyright concern — all of it is welcome. One person reads these, so please allow a few days for a reply.
We will never email you asking for your password, and we will never ask you to send it in a reply. A genuine password reset always comes as a link you request yourself from the sign-in box.
Short version: we store what is needed to run your account and your study record, nothing else. We do not sell your data, we do not show adverts, and we use Google Analytics only to understand how the site is used.
One cookie, named ielts.sid. It holds a session identifier so the site knows you are signed
in. It carries no personal information and is removed when you sign out. Google Analytics may set its own
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A few things on the page come from elsewhere. Typefaces are loaded from Google Fonts, Google Analytics helps us understand how visitors use the site, and some listening audio is played from the site that hosts it. Those services receive your IP address as part of any ordinary web request, and their own privacy terms apply. Nothing about your account or your results is sent to them.
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"Reset my data" on your profile clears your whole study record immediately. To delete the account itself, email us and it will be removed along with everything attached to it.
If this policy changes in a way that affects you, the change will be described on this page rather than made quietly.
By using Band 9 Vault you agree to what is written below. It is written plainly on purpose.
Band 9 Vault is a free study site offered as it is. We try to keep it accurate and available, but we do not promise that it will be free of mistakes or always reachable, and it may change or close at any time.
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. The trade mark is used only to describe what the material prepares you for.
A band shown after a test is an estimate produced by applying the standard band tables to your correct answers. It is not an official result, it does not predict your exam result, and it cannot be used as proof of your English level for any institution.
You are responsible for keeping your password to yourself and for what happens under your account. Use a real email address you can reach, because a forgotten password can only be reset through it. We may close an account that is used to attack, scrape, or disrupt the site.
The notes and drills are here for your own study. You may read them, print them, and practise with them. You may not republish them, sell them, or present them as your own work. Practice papers collected from elsewhere remain the property of whoever owns them.
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Questions about these terms go to [email protected].
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Band 9 Vault is an independent study site. It is not affiliated with, endorsed by, sponsored by, or connected in any way to the British Council, IDP Education, or Cambridge University Press & Assessment, who jointly own and administer IELTS. The name IELTS is used here only to describe the exam this material prepares you for.
A band shown after a test is produced by applying the published band tables to your correct answers. It is a study aid, nothing more. It is not an official IELTS result, it does not predict what you will score on exam day, and no university, employer, or immigration authority will accept it as evidence of your English. Only a genuine test sitting produces an official band.
The notes and answer keys are prepared carefully but are not guaranteed to be free of errors, and practice papers gathered from elsewhere sometimes carry mistakes of their own. Where an official source disagrees with something written here, the official source is right. Report anything that looks wrong and it will be corrected.
Nothing here is teaching, immigration, or admissions advice. Decisions about which exam to take, when to sit it, or what score you need should be made against official guidance and, where it matters, with a qualified adviser.
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Prepositions show relationships between words. They connect a noun or pronoun to other parts of the sentence. Prepositions express relationships of time ("in May"), place ("in the city"), direction ("toward the goal"), and abstract connection ("interested in learning").
In IELTS writing, preposition errors are frequent and lower scores noticeably. A student might write "discuss about" instead of "discuss." Or "married with" instead of "married to." These seem small, but they add up and reduce your Grammatical Range and Accuracy score.
For specific times, use at: "at 6:00 PM," "at noon," "at midnight." For specific days and dates, use on: "on Monday," "on January 15." For months, years, and longer periods, use in: "in March," "in 2024," "in winter."
| Structure | Pattern | Example |
|---|---|---|
| preposition + noun phrase | prep + noun | in the city, at night |
| preposition + pronoun | prep + object pronoun | with him, for them |
| preposition + gerund | prep + V-ing | interested in learning |
Band Penalty
Incorrect: She is good in cook. Correct: She is good at cooking.
Examples:
| Layer | Key Question | Priority |
|---|---|---|
| Domain | Time/place/direction/abstract? | meaning precision |
| Pairing | Which word collocates with it? | lexical accuracy |
| Data Logic | from/to/by/at used correctly? | Task 1 accuracy |
| Interference | Is it translated directly from L1? | error prevention |
| Preposition | Use | Examples |
|---|---|---|
| at | exact time points | at 6:00, at noon, at midnight |
| on | days and dates | on Monday, on 12 May |
| in | months/years/periods | in March, in 2026, in winter |
| Form | Core Meaning | Example |
|---|---|---|
| for + duration | length of time | for two years |
| since + starting point | start time to now/reference point | since 2019 |
| from ... to/until | start and end | from June to August |
| by + deadline | no later than | by 2030 |
| until/till | up to a point | until Monday |
| during + noun period | within period | during the lecture |
| Form | Meaning | Example |
|---|---|---|
| in + time period | after that period | The project will finish in two weeks. |
| within + time limit | any time before limit | Submit within two weeks. |
| Preposition | Use | Examples |
|---|---|---|
| at | point/location | at home, at school, at the station |
| in | enclosed area/large area | in a room, in Dhaka, in Bangladesh |
| on | surface/line | on the table, on the wall, on the coast |
| Pair | Core Difference | Example |
|---|---|---|
| above vs over | higher position vs covering/movement | above sea level, over the city |
| below vs under | lower position vs directly beneath | below average, under the bed |
| between vs among | two items vs more than two | between A and B, among students |
| in front of vs before | physical position vs order/time/formal | in front of the house, before lunch |
| Pair | Meaning | Example |
|---|---|---|
| to | destination | go to school |
| into | movement from outside to inside | walk into the room |
| in | position/state after movement | stay in the room |
| onto | movement to a surface | jump onto the stage |
| on | position on surface | sit on the stage |
| out of | movement from inside to outside | run out of the building |
| from | source/start point | come from Chattogram |
| across | movement from one side to the other | walk across the road |
| through | movement within a space | drive through the tunnel |
| along | movement following a line | walk along the river |
| past | movement beyond a point | run past the station |
| Function | Common Forms | IELTS Example |
|---|---|---|
| reason/cause | because of, due to, owing to | Delays occurred due to heavy traffic. |
| purpose | for | This fund is for rural education. |
| method/tool | by, with | Data was collected by survey; cut with a knife. |
| topic | about, on | a lecture on climate policy |
| effect relation | on, in, to | impact on jobs, increase in costs, solution to crime |
| contrast | unlike, in contrast to | Unlike urban areas, villages saw slower growth. |
| Pattern | Examples |
|---|---|
| depend on | depend on government support |
| result in | result in higher costs |
| suffer from | suffer from pollution |
| focus on | focus on quality |
| belong to | belong to a community |
| Pattern | Examples |
|---|---|
| increase in | increase in population |
| reason for | reason for migration |
| solution to | solution to congestion |
| effect on | effect on health |
| demand for | demand for housing |
| Pattern | Examples |
|---|---|
| aware of | aware of the risk |
| responsible for | responsible for delays |
| interested in | interested in science |
| similar to | similar to last year |
| different from | different from the old model |
Prepositions can sometimes appear after adjectives to complete or elaborate on the ideas or emotions the adjective describes. Prepositions used in this way are known as adjective complements. The preposition always comes directly after the adjective and is typically followed by a noun or gerund to form a prepositional phrase.
Common prepositions used with adjectives: of, to, about, for, with, at, by, in, from
Synonyms usually take the same preposition:
But some similar adjectives use different prepositions:
Antonyms often use the same preposition:
Adjectives and their noun forms often share prepositions:
But not always:
afraid of, frightened of, scared of, terrified of
kind of, nice of, sweet of, thoughtful of
odd of, strange of
proud of, rude of, smart of, sick of, tired of, silly of, stupid of
accustomed to, addicted to, committed to, dedicated to, devoted to, friendly to, good to, kind to, nice to, married to, mean to, rude to, unfriendly to, opposed to, similar to
angry about, furious about, mad about, anxious about, nervous about, stressed about, worried about, excited about, happy about, sad about, depressed about, sorry about, upset about
famous for, known for, responsible for, bad for, happy for, hopeful for
angry with, furious with, annoyed with, fed up with, bored with, content with, fine with, OK with, disappointed with, displeased with, pleased with
With may also be used in passive sentences to describe states:
amazed at/by, astonished at/by, shocked at/by, surprised at/by
At can also describe skills and abilities:
interested in, involved in
different from, protected from, tired from
Some adjectives can be paired with multiple prepositions, sometimes with a change in meaning:
In some cases, prepositions are not interchangeable:
For wider lexical pairings, use Collocations.
| Meaning | Correct Form | Example |
|---|---|---|
| start and end values | from X to Y | rose from 20% to 50% |
| amount of change | by Z | rose by 30 percentage points |
| exact value at time | at X | stood at 45% |
| range | between A and B | fluctuated between 30 and 40 |
| peak | peaked at | peaked at 70% |
| low point | fell to | fell to 12% |
| comparison | compared with/to | compared with 2010 |
Examples:
Band Penalty
Incorrect: discuss about the issue. Correct: discuss the issue.
Band Penalty
Incorrect: married with. Correct: married to.
Band Penalty
Incorrect: emphasize on this point. Correct: emphasize this point.
Band Penalty
Incorrect: increase from 20% by 50%. Correct: increase from 20% to 50%. Correct: increase by 30%.
Band Penalty
Incorrect: He entered into the room. (many contexts) Better: He entered the room.