What is Grammatical Range and Accuracy in IELTS Writing Task 1 and how to reach Band 7+?

In Task 1, examiners look at two main areas:

• Range
  How many different sentence structures you use: simple, compound, complex sentences, relative clauses, passive voice, time phrases, and so on.
• Accuracy
  How often your sentences are grammatically correct: verb tenses, subject–verb agreement, articles, prepositions, word order, and punctuation.

They also consider:

• How often your sentences are error-free.
• Whether errors make it difficult to understand the meaning.
• Whether you can handle more complex structures without losing control.

Band 7+ does not mean “no mistakes”, but it does mean that mistakes are not frequent or serious, and many sentences are completely correct.

Also read:

An Overview of IELTS Writing Task 1

How IELTS Writing Task 1 is Assessed

What is Task Achievement in IELTS Writing Task 1 and how to reach Band 7+

What is Coherence and Cohesion in IELTS Writing Task 1 and how to reach Band 7+

What is Lexical Resource in IELTS Writing Task 1 and how to reach Band 7+

An Introduction to the Visuals in IELTS Writing Task 1

Sentence range

Band 6: Mostly simple, some attempts at complex.

Band 7: Good mix of simple, compound and complex sentences.

Error frequency

Band 6: Errors are quite frequent but meaning is usually clear.

Band 7: Errors are less frequent; many sentences are error-free.

Effect of errors on meaning

Band 6: Occasionally distracting; some awkward structures.

Band 7: Rarely cause confusion; writing feels controlled.

Tenses and agreement

Band 6: Some tense and agreement problems.

Band 7: Generally accurate use of tenses and agreement.

Complex structures

Band 6: Attempts, but often with mistakes or poor punctuation.

Band 7: Uses complex structures with good control and clear punctuation.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Band 6

“In 2000, the percentage of people using public transport in City A was about 30% and in City B it was only 20%. City C was higher with around 40%. In 2020, all the figures increased and City A went up to 45% and City B also increased to 35%, City C was the highest with 50%. This show that there was an increase in all cities in public transport users.”

• Mostly simple sentences, one long sentence joined by a comma (“…35%, City C was the highest…”).
• Error: “This show” → “This shows”.
• Limited range of structures.
• Errors do not destroy meaning, but they are noticeable.

Band 7

“In 2000, around 30% of residents in City A used public transport, compared with only 20% in City B, while City C had the highest figure at approximately 40%. By 2020, the proportions in all three cities had increased: usage in City A had risen to about 45%, and the figure for City B had climbed to 35%, whereas City C still led, at around 50%. This indicates that, although public transport became more popular everywhere, City C maintained a clear advantage over the other two locations.”

• Clear mix of complex and compound sentences with correct punctuation.
• Accurate use of tenses (“had increased”, “had risen”, “had climbed”).
• Correct linking (“while”, “whereas”, “although”).
• Errors, if any, are minor and do not affect clarity.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

You do not need long, complicated sentences everywhere, but you must show that you can use more than basic simple sentences.

Examples about a line graph:

• Simple: “The percentage of car owners increased between 2000 and 2020.”
• Compound: “The percentage of car owners increased between 2000 and 2020, and the rise was particularly strong after 2010.”
• Complex: “Although the percentage of car owners increased in all three countries, it grew most significantly in Country A.”

Aim for several clear complex sentences in each detail paragraph, not just one.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Sentence Structure Problems and How to Fix Them for IELTS Writing Task 2

Some structures are commonly found in high-band Task 1 answers:

• Although / while / whereas for contrast
  “While car ownership rose in all countries, it remained lowest in Country C.”
• Because / since for reasons (in processes/maps, not for opinions)
  “The second stage is shorter because the mixture has already been heated.”
• When / after / before / once for sequences in processes
  “After the cement is ground, it is mixed with water to form concrete.”
• Relative clauses
  “Country A, which started with the highest figure, maintained its lead throughout the period.”
• Passive voice (very useful in processes)
  “The raw materials are transported to the factory, where they are processed into finished products.”

Using these accurately shows range and control.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Sentence Structure Problems and How to Fix Them for IELTS Writing Task 2

Most Task 1 questions use:

• Past simple for finished time periods:
  “The number of tourists increased steadily between 1990 and 2010.”
• Present simple for general descriptions, tables with no time, or maps:
  “The table shows current figures for electricity use.”
  “In the present day, the town centre is dominated by commercial buildings.”
• Future forms only if the diagram includes future data:
  “The proportion of older people is expected to rise by 2030.”

Band 7+ writers use tenses consistently and avoid mixing past, present and future in a confusing way.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Mistakes to Avoid in IELTS Writing Task 1

Moving from Band 6 to 7 is often about removing repeated mistakes rather than learning advanced grammar.

Watch for:

• Subject–verb agreement
  “The percentage increases.”
  “The numbers increase.”
  “The amount of energy was 50 units.”
  “The number of people was 50,000.”
• Articles (a, an, the)
  “There was a slight increase in sales.”
  “The percentage of students who chose science rose gradually.”
• Countable vs uncountable nouns
  “much information”, “much traffic”, “many countries”, “many changes”.
• Prepositions in fixed phrases
  “an increase in”, “a decrease in”, “a rise of 10%”, “compared with/to”.
• -ly adverbs
  “rose sharply”, “declined gradually” (not “declined gradual”).

Fewer repeated errors = higher impression of accuracy.

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Mistakes to Avoid in IELTS Writing Task 1

Good punctuation helps your grammar look controlled:

• Full stops to avoid very long, confusing sentences.
• Commas after linking phrases: “Overall, …”, “In addition, …”, “By contrast, …”.
• Commas to separate clauses in complex sentences:
  “Although the figures were similar in 2000, they diverged significantly over the next decade.”

Avoid “comma splices” (two full sentences joined only by a comma).

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Punctuation Problems and How to Fix Them for IELTS Writing Task 2

While planning and writing

• Use a mix of simple, compound and complex sentences.
• Keep tenses consistent with the task (mostly past for charts with years, present for general descriptions).
• Include a few safe complex patterns (although/while, because/since, relative clauses, passive voice).

Quick check after writing

• Any very long sentences that need to be split?
• Are subject–verb agreement, articles and plurals mostly correct?
• Did I avoid obvious comma mistakes and run‑on sentences?

Also read:

How IELTS Writing Task 1 is Assessed

An Introduction to the Visuals in IELTS Writing Task 1

Common Mistakes to Avoid in IELTS Writing Task 1

Reaching Band 7+ in Grammatical Range and Accuracy for Task 1 depends more on consistency and control than on using extremely complex grammar. When you can combine clear complex sentences with accurate verb forms, articles and prepositions, and avoid frequent basic errors, your description of charts and processes becomes much easier for examiners to follow. By practising safe high‑band structures, correcting your typical mistakes and using a grammar checklist after each practice task, you can gradually move your writing from a shaky Band 6 level to the confident, well‑controlled standard required for higher bands.

An Introduction to IELTS Academic Test

Everything You Need to Know about IELTS Academic Writing Test

An Overview of IELTS Writing Task 1

How IELTS Writing Task 1 is Assessed

What is Task Achievement in IELTS Writing Task 1 and how to reach Band 7+

What is Coherence and Cohesion in IELTS Writing Task 1 and how to reach Band 7+

What is Lexical Resource in IELTS Writing Task 1 and how to reach Band 7+

An Introduction to the Visuals in IELTS Writing Task 1

General Test Skills for IELTS Writing Task 1

Time Management Skills for IELTS Writing Task 1

Proofreading Skills for IELTS Writing Task 1

Common Mistakes to Avoid in IELTS Writing Task 1

Common Sentence Structure Problems and How to Fix Them for IELTS Writing Task 2

Common Punctuation Problems and How to Fix Them for IELTS Writing Task 2