IELTS Writing Grammatical Range and Accuracy Explained

Grammar accounts for 25% of your IELTS Writing score. A quarter. And yet most candidates either ignore it completely or obsess over commas while missing the bigger picture. Let’s fix that.

Grammatical Range and Accuracy is one of the four criteria examiners use to score both Task 1 and Task 2. The name tells you exactly what they’re looking for: range (variety of structures) and accuracy (using them correctly). You need both. One without the other won’t get you past Band 6.

What Examiners Actually Mean

When an examiner reads your essay, they’re asking two questions:

1. Does this writer use a variety of grammatical structures, or do they rely on the same simple patterns?
2. Are those structures used correctly, or are there errors that affect meaning?

A Band 5 writer uses simple sentences, gets most of them right, but never really stretches. A Band 7 writer uses complex structures confidently, with only occasional slips. A Band 9 writer uses a full range of structures with consistent accuracy — meaning errors are rare and never confuse the reader.

The key word in the band descriptors is flexibility. Examiners want to see that you can choose the right structure for the right moment, not just repeat one safe pattern throughout your essay.

Range: What Structures Should You Be Using?

Here’s a practical list of structures that demonstrate range. You don’t need all of them in every essay, but you should be comfortable using most of them:

• Relative clauses: The policy, which was introduced in 2010, has been widely criticised.
• Conditional sentences: If governments invested more in public transport, carbon emissions would fall significantly.
• Passive voice: A great deal of data has been collected on this issue.
• Participle clauses: Having considered both sides, I believe the benefits outweigh the drawbacks.
• Noun clauses: What concerns many experts is the speed of climate change.
• Reported speech and hedging: It is often argued that technology isolates people.

Notice these aren’t exotic or bizarre. They’re standard academic English. If they feel unfamiliar, that’s exactly the gap your preparation should address. Practising structures like these in real writing tasks is what daily coaching sessions are built around. For more details, click here.

Accuracy: The Errors That Cost You Marks

Range without accuracy is like driving fast in the wrong direction. The most common accuracy errors in IELTS Writing are:

• Subject-verb agreement: The number of cars are increasing. (should be is)
• Article errors: Government should take action. (needs The or restructuring)
• Tense inconsistency: Switching between past and present with no logical reason
• Pronoun reference: Using they or it when it’s not clear what they refer to
• Punctuation: Comma splices, missing commas after subordinating conjunctions, and full stops in the wrong place

A handful of errors in a 250-word essay is normal at Band 6-7. What matters is whether those errors affect the reader’s understanding. Minor slips: acceptable. Errors that make you re-read a sentence: not acceptable.

Worked Examples

Compare these two versions of the same idea:

Weak (Band 5): Many people use social media. It is popular. Companies use it for marketing. This is good for business.

Stronger (Band 7): Social media, which has grown exponentially over the past decade, is now widely used by companies as a cost-effective marketing tool, enabling them to reach audiences that traditional advertising rarely accessed.

The second version uses a relative clause, a passive construction, and a participle phrase. Same idea, far more sophisticated delivery — and it’s still accurate.

Now a Task 1 example (describing a graph):

Weak: Sales went up in 2020. Then they went down in 2021. They went up again in 2022.

Stronger: Having risen sharply in 2020, sales declined the following year before recovering to reach a new peak in 2022.

One sentence. Three movements. A participle clause, a time reference, and a before-clause. That’s range in action.

Practice Exercise

Rewrite or complete each sentence to demonstrate better grammatical range. Aim for accuracy too — don’t introduce errors in the process.

1. Rewrite using a relative clause: The report was published last year. It showed a rise in unemployment.
2. Rewrite using a conditional: We need better public transport. Then fewer people will drive.
3. Fill in the blank with the correct form: It is widely believed that social media ________ (have) a negative effect on young people’s mental health.
4. Rewrite using a participle clause: The company considered the data. Then it decided to expand into Asia.
5. Correct the error: The number of students applying for university are increasing every year.

Work through these carefully. Think about both the structure and whether your version is grammatically clean. This kind of structured, feedback-driven practice is exactly what daily coaching sessions focus on. If you want your writing reviewed and corrected in real time, here’s how the coaching works.

Vocabulary to Know

• grammatical range /ɡrəˈmætɪkəl reɪndʒ/ – Level: B2 – the variety of grammatical structures a writer or speaker uses – Example: Her essay demonstrated impressive grammatical range, including conditionals, passives, and noun clauses.
• accuracy /ˈækjərəsi/ – Level: B1 – the quality of being correct and free from errors – Example: Accuracy in written English means your sentences say exactly what you intend them to say.
• subordinating conjunction /səˌbɔːdɪneɪtɪŋ kənˈdʒʌŋkʃən/ – Level: C1 – a word that connects a dependent clause to a main clause (e.g. although, because, while) – Example: Although the results were promising, the study had several limitations.
• participle clause /ˈpɑːtɪsɪpəl klɔːz/ – Level: C1 – a clause beginning with a present or past participle, used to add information concisely – Example: Having reviewed the evidence, the committee reached a unanimous decision.
• hedge /hɛdʒ/ – Level: B2 – to use cautious or qualifying language to avoid making absolute claims – Example: In academic writing, it is common to hedge by saying “it is suggested that” rather than stating something as fact.
• comma splice /ˈkɒmə splaɪs/ – Level: C1 – an error in which two independent clauses are joined with only a comma and no conjunction – Example: “The results were surprising, the team had not expected such an outcome” is a comma splice.
• noun clause /naʊn klɔːz/ – Level: C1 – a clause that functions as a noun in a sentence, often beginning with what, that, or whether – Example: What the data reveals is that consumption has increased steadily since 2015.
• subject-verb agreement /ˈsʌbdʒɪkt vɜːb əˈɡriːmənt/ – Level: B1 – the grammatical rule that a verb must match its subject in number (singular or plural) – Example: Subject-verb agreement errors are common when the subject is a phrase rather than a single noun.
• syntactic flexibility /sɪnˈtæktɪk flekˈsɪbɪlɪti/ – Level: C2 – the ability to vary sentence structure naturally and appropriately – Example: High-scoring IELTS candidates show syntactic flexibility by adapting their sentence structures to suit the context.
• band descriptor /bænd dɪˈskrɪptə/ – Level: B2 – the official written description of what a particular IELTS band score requires – Example: Reading the band descriptors helps you understand what an examiner is looking for at each score level.

Frequently Asked Questions

Does using complex structures always improve my score?
Only if you use them correctly. A complex sentence with two errors is worse than a simple sentence with none. Build your range gradually, and only use structures you can control. Trying to impress an examiner with a structure you half-understand usually backfires.

How many grammar mistakes are acceptable in a Band 7 essay?
There’s no fixed number, but the descriptor says “frequent error-free sentences” and “good control of grammar.” Think of it this way: if a native English speaker would pause and re-read your sentence, that’s a problem. If they notice a minor slip but keep reading without confusion, you’re probably fine.

Should I use the same structures in Task 1 and Task 2?
Both tasks assess grammatical range and accuracy, so the same principle applies. That said, Task 1 often calls for specific language (trends, comparisons, describing a process), so practise structures suited to data description as well as argumentation.

One Last Thing

Grammatical range and accuracy is a skill you build through deliberate practice and honest feedback, not through reading about it. Knowing what a participle clause is and being able to use one naturally under exam conditions are two very different things. If you want to close that gap with structured practice and personal feedback on your writing, take a look at the daily coaching programme at richardg.xyz/subscription.