IELTS Grammar Guide 2026: Essential Rules, Tenses & Band 7+ Structures
Master IELTS grammar with essential tense rules, complex sentence structures, article usage, and common error fixes. Grammatical Range & Accuracy determines 25% of your score.
Grammar counts for 25% of your Writing and Speaking score. You don't need perfect grammar ā you need strategic grammar. Know which structures examiners reward and which mistakes they penalise.
Why Grammar Matters
Examiners assess two things:
Range: Using a variety of sentence structures ā simple, compound, and complex. Band 7+ requires frequent use of complex sentences.
Accuracy: Minimising errors. Band 7 Writing requires "good control" with only occasional errors. Band 8 requires "rare minor errors."
A Band 6 essay may have several grammatical errors but still be understandable. A Band 8 essay has very few errors AND shows sophisticated sentence control. Both dimensions matter.
Essential Tenses for IELTS
You don't need every tense in English. These six cover 95% of what IELTS requires:
| Tense | When to Use | Example |
|---|---|---|
| Present Simple | Facts, habits, general truths | "The graph shows the number of tourists visiting Australia." |
| Present Perfect | Past events with present relevance | "The rate of unemployment has increased significantly over the last decade." |
| Past Simple | Completed past actions | "In 2010, the government introduced new environmental regulations." |
| Past Perfect | The earlier of two past events | "By 2015, the company had already expanded into three new markets." |
| Future (will/going to) | Predictions, forecasts | "It is predicted that the population will reach 9 billion by 2050." |
| Present Continuous | Ongoing trends, changes | "The number of electric vehicles is rising steadily." |
Modal verbs for speculation: may, might, could, must, should. These are essential for Part 3 Speaking and Task 2 Writing when discussing possibilities or giving opinions.
Complex Sentence Structures for Band 7+
Conditionals (If/When): "If the government invests in renewable energy, carbon emissions could be reduced by 30%."
Relative Clauses (which, that, who, where): "The rise in obesity, which is largely caused by sedentary lifestyles, has become a major public health concern."
Although / Despite / While: "Although technology has improved productivity, it has also led to increased job insecurity."
Passive Voice (academic tone): "It is widely believed that climate change is the greatest challenge facing humanity."
Causative Structures: "The increase in greenhouse gases has led to rising global temperatures."
Participle Clauses: "Having analysed the data, researchers concluded that the trend is irreversible."
Mix short, clear sentences with longer complex ones. An essay with only complex sentences feels unnatural. An essay with no complex sentences feels simple. Balance is key.
Articles & Prepositions
Articles (a/an/the):
- Use a/an for non-specific singular count nouns: "a government", "an approach"
- Use the for specific or previously mentioned items: "the government introduced..."
- Use no article for general plurals and uncountable nouns: "Education is important"
Common Article Errors:
- ā "Government should invest." ā ā "The government should invest."
- ā "I went to the university." ā ā "I went to university." (general concept)
- ā "The technology has changed." ā ā "Technology has changed." (general concept)
Prepositions:
- At a point: at 3pm, at the corner, at the moment
- In an area/time: in London, in the world, in 2020, in the 21st century
- On a surface/day: on the table, on the internet, on Monday, on the other hand
- By means/method: by car, by analysing data, by 2050
- Between/Across/Over for comparisons and ranges
Common Grammar Mistakes
Subject-Verb Agreement: ā "The number of students are increasing." ā "The number of students is increasing."
Run-on Sentences: ā "Education is important it helps people get jobs." ā "Education is important because it helps people get jobs."
Wrong Tense Shifts: ā "The study found that many people are concerned." ā "The study found that many people were concerned."
Countable / Uncountable Confusion: ā "Many researches have been done." ā "Much research has been done." (Information, advice, knowledge, research, equipment are all uncountable.)
Misplaced Modifiers: ā "Having studied for months, the exam was easy." (The exam didn't study.) ā "Having studied for months, I found the exam easy."
How to Improve Your Grammar
Read academic texts: Notice how sentences are structured. Pay attention to articles and prepositions ā they're the hardest to master.
Practice with structure drills: Write 5 complex sentences using each structure (conditionals, relative clauses, passive voice).
Get feedback: The fastest way to improve is to write and have someone tell you exactly where you're making errors.
ā IELTS Writing Practice with Grammar Feedback ā IELTS Writing Task 2 Essay Structure Guide ā Start Free Practice