IELTS Grammar Guide: The 8 Structures That Separate Band 6 from Band 8

Grammar in IELTS: What "Grammatical Range and Accuracy" Really Means

The Grammatical Range and Accuracy criterion in IELTS Writing and Speaking rewards both the variety of structures you use and how accurately you use them. Band 6 essays typically show simple sentences and some complex structures with frequent errors. Band 7–8 essays demonstrate a wide range of structures with only occasional minor errors.

You don't need to be grammatically perfect to score Band 7. What matters is using a variety of complex structures correctly most of the time. This guide covers the 8 structures that make the biggest difference to your score.

Structure 1: Complex Sentences with Subordinating Conjunctions

Subordinating conjunctions join a main clause and a dependent clause. Using them correctly and varied shows grammatical range.

Although many countries have invested heavily in renewable energy, carbon emissions continue to rise globally.
Since the introduction of smart technology in classrooms, student engagement has increased dramatically.
Unless governments implement stricter environmental regulations, climate change will continue to accelerate.
Whereas urban populations have access to advanced healthcare facilities, rural communities often rely on limited resources.

Key conjunctions to master: although, even though, whereas, since, because, as, unless, provided that, despite the fact that, given that.

Structure 2: Relative Clauses

Relative clauses add information about a noun and are a clear marker of grammatical range.

Defining: "Students who study abroad tend to develop stronger cross-cultural communication skills."
Non-defining: "Remote working, which has become increasingly common since 2020, has fundamentally changed workplace culture."
With prepositions: "This is the policy about which there has been considerable debate." (formal)

Structure 3: Conditional Sentences

IELTS Writing Task 2 often involves arguing about hypothetical situations, making conditionals essential.

Zero conditional (general truths): "If governments fail to act on climate change, temperatures rise inexorably."
First conditional (real possibility): "If more investment is directed towards public transport, traffic congestion will decrease significantly."
Second conditional (hypothetical): "If all countries were to adopt renewable energy, carbon emissions would fall by an estimated 70%."
Third conditional (past hypothetical): "If stricter regulations had been introduced earlier, the environmental damage could have been prevented."
Mixed conditional: "If technology had developed at a slower pace, society would not be facing the privacy concerns we see today."

Structure 4: Passive Voice

Passive voice is common in academic writing and signals formality. However, it must be used purposefully — not as a way to avoid active structures.

"Research has shown that…" → "It has been shown by research that…" (formal passive)
"Scientists argue…" → "It is widely argued that…"
"Experts are debating this issue." → "This issue is currently being debated among experts."
"The government introduced the policy in 2020." → "The policy was introduced by the government in 2020."

Structure 5: Perfect Tenses

Many IELTS students rely only on simple past and present tenses. Using perfect tenses accurately demonstrates a wider grammatical range.

Present Perfect: "Globalisation has transformed the way businesses operate over the past three decades."
Present Perfect Continuous: "Scientists have been studying the effects of screen time on children for more than 20 years."
Past Perfect: "By the time digital technology emerged, traditional communication methods had already begun to decline."

Structure 6: Noun Clauses

Noun clauses function as nouns within a sentence and are a strong indicator of advanced grammar.

"What concerns many educators is the increasing reliance on technology in the classroom."
"The question of whether online education can replace traditional schooling remains unresolved."
"It is widely believed that exercise has a direct positive impact on mental health."

Structure 7: Inversion for Emphasis

Inversion (reversing the normal subject-verb order) is an advanced formal structure that appears in high-scoring academic writing.

"Not only does globalisation create economic opportunities, but it also poses significant cultural challenges."
"Rarely has such a radical shift in working habits been observed within a single generation."
"Only by investing in sustainable energy sources can governments hope to meet their climate targets."
"Under no circumstances should students be penalised for asking questions in class."

Structure 8: Cleft Sentences for Emphasis

Cleft sentences emphasise a particular element and add variety to your sentence structures.

"It is access to quality education that determines long-term economic outcomes for individuals."
"What the data clearly demonstrates is that urban populations face greater air pollution risks."
"It was the introduction of smartphones that fundamentally changed how humans communicate."

Accuracy Tips: The Most Common Grammar Errors in IELTS

Article errors: "The government should provide a free education" → "should provide free education" (no article with uncountable nouns)
Subject-verb agreement: "The number of students are increasing" → "is increasing"
Countable/uncountable nouns: "Many informations" → "Much information" / "a great deal of information"
Preposition errors: "Depends of" → "Depends on"; "interested about" → "interested in"
Parallel structure: "Running, swimming, and to cycle" → "Running, swimming, and cycling"

A Grammar Practice Routine That Works

Spend 15 minutes each day on grammar practice using this rotation:

Monday: Write 5 sentences using complex conditionals
Tuesday: Rewrite 5 active sentences in passive voice (and back)
Wednesday: Write 5 sentences using inversion structures
Thursday: Write a paragraph using only perfect tenses
Friday: Review a previous IELTS essay and identify/correct all grammatical errors

Grammar improvement requires active production — writing and speaking with new structures — not passive review. The structures in this guide, used consistently and accurately, will significantly boost your Grammatical Range and Accuracy score toward Band 7 and beyond.