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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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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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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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.
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Start: Do I need an article?
│
├─ Is it a SPECIFIC NOUN (a particular thing)?
│ └─ YES → Use "the" (definite)
│ Example: "The study demonstrates... the methodology..."
│ └─ NO (general, first mention) → Continue
│
├─ Is it COUNTABLE (can be plural)?
│ └─ YES, first mention → Use "a" or "an" (indefinite)
│ Example: "A research project was established."
│ └─ YES, already mentioned → Use "the"
│ └─ NO (uncountable) → NO ARTICLE or "the"
│ Examples: "Research has shown... The research demonstrates..."
│
└─ Is it a PROPER NOUN (name)?
└─ YES → NO ARTICLE usually
Examples: "Cambridge" not "the Cambridge"; "Data" (proper) not "the Data"
✓ Correct:
"A study was conducted. The study lasted two years."
(First mention: "a study" ← indefinite
Second mention: "The study" ← now we know which one)
"The methodology described above..."
(We've already identified which methodology)
"The government must implement policy."
(Unique institution: only one government per country)
✗ Band 6 Error:
"A study shows the results. Study is important."
(Missing "the" before second "study"; unclear reference)
✓ Correct:
"A virus spread quickly."
(Any virus, not specific one yet)
"Researchers conducted an experiment."
(Any experiment, not yet specified which)
✗ Band 6 Error:
"Virus spread quickly."
(Missing article; awkward and wrong)
Take articles: a/an (singular), the (identified)
✓ a student, a policy, a factor
✓ students, policies, factors (plural, no article in general)
✓ the student, the policy, the factor (specific)
Common Countable Nouns in IELTS:
No article in general statements, "the" when specific
✓ Research has shown...
✓ The research demonstrates...
✗ A research shows... (WRONG)
✓ Data exists...
✓ The data proves...
✗ A data point... (WRONG; use "a data POINT")
✓ Information suggests...
✓ The information provided...
✗ An information... (WRONG)
Common Uncountable Nouns in IELTS:
You CAN use articles by adding countable modifiers:
✓ "a research project" (countable)
✓ "a study" (study = countable version of research)
✓ "a piece of data" (countable)
✓ "a piece of information" (countable)
✓ "an item of technology" (countable)
Band 8 Pattern:
"A research methodology was established. The methodology incorporated three collection phases."
(First sentence: "A research methodology" = introducing new thing
Second sentence: "The methodology" = referring to specific one we've identified)
Band 6 Error:
"A methodology was used. Methodology showed clear patterns."
(Remove article entirely from second mention = confusing)
vs
"The methodology was used. A methodology showed clear patterns."
(Inconsistent: the → a suggests new thing, but meaning is continuation)
✓ "A factor emerged. The factor influenced outcomes."
✓ "A participant joined. The participant completed tasks."
✓ "A theory was tested. The theory predicted results."
When discussing things in general, not specific instances:
Plural Countable Nouns (no article):
✓ "Children learn from experience."
(Children in general, not specific children)
✓ "Studies demonstrate that policies affect behavior."
(Studies in general class, policies in general)
✗ "The children learn from the experience."
(Wrong: suggests specific children and specific experience)
Uncountable Nouns (no article):
✓ "Technology transforms society."
(Technology in general, society in general)
✓ "Research indicates education improves outcomes."
(Research [uncountable, no article], education [uncountable, no article])
✗ "The technology transforms the society."
(Wrong: suggests specific technology and society)
Article stays with the noun it modifies; adjectives don't change article placement:
✓ Correct:
"a comprehensive study" (a + adjective + noun)
"the significant factors" (the + plural noun with adjective)
"complex information" (uncountable + adjective, no article)
✗ Band 6 Error:
"a study comprehensive" (wrong adjective order)
"comprehensive study" (should "a comprehensive study" if first mention)
"a comprehensive research" (research uncountable; should "comprehensive research" or "a comprehensive research project")
Band 8 Pattern:
"Paragraph 1: A questionnaire was distributed to 200 participants. The questionnaire included 15 items. The participants completed the questionnaire within one week. Analysis of the questionnaire revealed..."
(Questionnaire introduced once with "a" = becomes "the" for all four additional mentions)
Band 6 Error:
"Questionnaire was distributed. Questionnaire included 15 items. Questionnaire revealed patterns."
(Removing all articles = very informal, unclear reference)
Superlatives (most, best, highest, etc.) ALWAYS take "the":
✓ Correct:
"The most significant finding..."
"The highest priority..."
"The best approach..."
Unique/Singular Nouns (only one) take "the":
✓ Correct:
"The sun rises..."
"The moon affects..."
"The government should..."
"The Internet provides..."
When you use "before" or "after" + noun, use "the" because context makes it specific:
✓ Correct:
"Before the study, researchers prepared."
"After the analysis, conclusions emerged."
"The pre-test measured baseline..."
"The post-test measured improvement..."
| Band 6 Error | Band 8 Correction | Why |
|---|---|---|
| "Research shows..." (uncountable, OK, but vague first mention) | "A comprehensive study demonstrates..." | Upgrade with adjective + article for specificity |
| "The data shows" | "The data demonstrate" | Data = plural, BUT with "the," singular verb acceptable in modern English; better: "demonstrate" |
| "A research was conducted." | "A study was conducted." | Research uncountable; use "study" (countable) |
| "Information are important." | "The information is critical." | Information = uncountable (singular verb); add "the" for specificity |
| "I visited a museum. Museum was big." | "I visited a museum. The museum was exceptionally large." | After first mention, use "the"; upgrade adjective |
| "Education is important for societies." | "Educational advancement impacts social mobility." | Article omitted correctly (general statements), but upgrade noun forms/specificity |
| "The methodology" [first mention] | "A methodology was established..." | First mention = indefinite "a"; "the" only if specific context known |
| "Methods are used in study." | "The methods employed in the study were..." | "The methods" = specific identified ones; "in the study" = specific study already mentioned |
| "Technology develops fast." | "Technological development accelerates continuously." | No article (general), but upgrade noun forms and specificity |
| "A research conducted showed..." | "A study conducted by X demonstrated..." | Not "a research"; use "study" or "research project" |
| "An informations provided..." | "The information provided..." | Information uncountable; cannot use "an"; use "the" + singular verb |
| "Government should implement policies." | "The government should implement comprehensive policy frameworks." | "Government/policies" generic, but upgrade specificity with "comprehensive"; first policy = "the," then "comprehensive policy frameworks" |
✓ "The Impact of Technology on Society"
(Often written: "Impact of Technology on Society" in headlines)
✓ "Research Methods Across Disciplines"
(Informal/title style: omit all articles)
✓ "The methodology is a systematic approach to data collection."
("the methodology" = the specific one we've defined
"a systematic approach" = indefinite, describes what it is)
✓ "In 'The Ethics of Artificial Intelligence,' Smith argues..."
(Use "the" as part of title)
✓ Johnson's research demonstrates..."
(No article for "Johnson's"; possessive makes it specific)
Insert the correct article (a/an/the) or leave blank if no article needed:
Answer: A / the / [blank]
Answer: [blank] / [blank]
Answer: The / the / a
Answer: The / the
Answer: [blank] / the / [blank]
Read 20 nouns; classify each as Countable (C) or Uncountable (U):
1. study (C), evidence (U), methodology (C), technology (U), participant (C), etc.
Write 10 nouns with "a" or "an" indefinite articles (choose correctly a vs an):
1. a study, an experiment, a methodology, an outcome, etc.
Rewrite 15 sentences, identifying when first noun gets "a" and when second mention gets "the":
Before: "A policy was established. Policy influenced outcomes."
After: "A policy was established. The policy influenced outcomes."
Write 10 sentences about general truths using plural nouns or uncountable nouns WITHOUT articles:
"Research demonstrates that education affects society."
"Children learn from experience."
Take 3 sample essays, identify 30 article errors, correct each with reasoning
Write 5-paragraph essay on any topic, ensuring 100% correct article usage
Write 50-word passage on IELTS topic using 15+ nouns with correct article usage (2 min limit)
Error Classification: Error Classification System
Transformation Examples: Error Transformation Patterns
Homophones: Homophones and Confusables
Vocabulary Reference: Nouns, Adjectives Band8
Writing Application: POS in Writing Application