IELTS Writing Task 2: Grammatical Range — How to Write Complex Sentences
Quick answer: Grammatical Range in IELTS Task 2 means using a mix of simple, compound, and complex sentence structures with high accuracy. Band 8+ candidates use 6 core patterns: relative clauses, conditional clauses, participle phrases, noun clauses, comparative structures, and passive voice for emphasis.
This guide is part of the WitPrep IELTS Hub. It is updated for 2026 with the current IELTS format, fees, and band descriptors. If you want a personalised band estimate before reading, run the free IELTS diagnostic.
What examiners look for
Grammatical Range and Accuracy is one of four equally-weighted Task 2 criteria. Range means a mix of sentence types; accuracy means few errors.
Band 6: mostly simple sentences with some compound structures. Errors don't impede meaning.
Band 7: a mix of simple, compound, and complex. Some errors but they're manageable.
Band 8: a wide variety of structures used flexibly with only minor errors.
Band 9: full range with rare, slip-style errors only.
Pattern 1: relative clauses
Defining: "The students who study daily achieve higher bands." (Identifies which students.)
Non-defining: "Smartphones, which most teenagers now own, have changed how we communicate." (Adds extra info.)
Use both. Relative clauses are the easiest demonstration of complex sentence range.
Pattern 2: conditional clauses
Zero conditional (general truths): "If governments invest in public transport, congestion decreases."
First conditional (likely future): "If schools introduce coding, students will gain valuable skills."
Second conditional (hypothetical present): "If all cities banned cars, air quality would improve."
Third conditional (hypothetical past): "If governments had acted earlier, the crisis could have been avoided."
Mixed conditional: "If we had invested in renewables 20 years ago, we would not face this crisis today."
Pattern 3: participle phrases
Present participle: "Recognising the urgency, governments are now investing in clean energy."
Past participle: "Faced with rising costs, businesses are cutting workforce numbers."
Perfect participle: "Having reviewed the evidence, experts conclude that action is needed."
Participle phrases compress two clauses into one elegant sentence — high band signal.
Pattern 4: noun clauses
What/why/how clauses as subject: "What concerns experts most is the rate of change."
That clauses as object: "Researchers argue that climate change is accelerating."
Whether clauses as subject: "Whether universities should ban smartphones remains debated."
Pattern 5: comparative structures
Standard comparative: "Renewable energy is more sustainable than fossil fuels."
Parallel comparative: "The faster cities grow, the more housing they need."
Superlative with restrictive clause: "Of all the policies considered, this is the most effective."
Pattern 6: passive voice for emphasis
Standard passive: "This policy was introduced in 2020."
Reporting passive: "It is widely believed that education improves life outcomes."
Passive in subordinate clauses: "The decision, which was made hastily, has had lasting consequences."
Use passive sparingly — overuse hurts clarity and lowers Coherence.
Aim for 1–2 examples of each pattern in a 270-word essay. That demonstrates full range without forcing structures.
Common grammar errors at band 7
Article errors: missing 'a/an/the' or wrong choice between them.
Subject-verb agreement: "The number of students is" not "are".
Tense shift: starting in present, drifting into past mid-essay.
Run-on sentences: 3+ clauses joined with commas instead of conjunctions.
Pronoun ambiguity: "this" without a clear antecedent noun.
Practice this with WitPrep
Reading about IELTS only gets you so far — band gains come from rubric-graded practice. Open the IELTS Writing coach to drill this exact skill with band-by-band feedback. If you have not yet baselined your level, start with the free IELTS diagnostic (free, ~10 min).
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Frequently Asked Questions
How many complex sentences do I need?
Aim for 4–6 complex sentences across a 270-word essay, mixed with simple and compound sentences for variety.
Can I score band 8 with simple sentences only?
No. Range is explicitly required. Simple-only essays cap at band 6 on Grammatical Range.
Are inversions (e.g., 'Never have I seen…') worth using?
Sparingly. One well-used inversion shows range; overuse looks formulaic.
Should I avoid the passive voice?
No. Passive is a grammatical structure; using it appropriately demonstrates range. Avoid only when it makes the sentence unclear.
How do I check accuracy?
Proofread sentence-by-sentence in the last 2 minutes. Focus on subject-verb agreement, articles, and tense.
Can I use a grammar app to check my IELTS practice essays?
Yes — Grammarly and similar tools catch most accuracy errors. But don't rely on them for range, which is a writing-style choice.
How we verify this content
Every fact on this page is sourced from primary IELTS publishers — IELTS.org, the British Council, IDP IELTS Australia, Cambridge Assessment English, or the relevant national immigration authority. Our IELTS team re-checks these sources at least once per quarter. Where we cite institution-specific scores, we link to that institution's own admissions or visa page. If you spot anything out of date, please contact our editors.