Mastering Complex Structures for Band 7 and Above

Welcome! If you are aiming for a Band 7 or higher in IELTS Writing Task 2, you have come to the right place. To reach these top scores, the examiner isn't just looking for correct English; they are looking for Grammatical Range and Accuracy. This means you need to show off a variety of sentence shapes—not just short, simple ones.

Don't worry if "grammar" sounds scary. Think of simple sentences like individual Lego bricks. They are fine on their own, but to build something impressive like a castle, you need to connect them. In this chapter, you will learn the "connectors" that turn basic ideas into high-scoring essays.

Why Complex Structures Matter for Your Score

In the official IELTS marking criteria, a Band 6 candidate uses a "mix of simple and complex forms." However, to get a Band 7, you must "use a variety of complex structures" and produce "frequent error-free sentences."

The Golden Rule: Complexity does not mean "long and confusing." A complex sentence is simply a sentence that contains more than one clause (an idea with a subject and a verb). If you only use simple sentences, your writing feels "choppy" and childish to the examiner.

Did you know? You don't need to use a complex structure in every single sentence. Aim for a 50/50 balance between simple, clear sentences and more advanced, complex ones.

1. Relative Clauses: Adding Detail Without Starting New Sentences

Relative clauses use words like who, which, that, and where to add extra information to a noun. This is much more sophisticated than writing two separate sentences.

Weak Version (Band 5-6): Some parents work long hours. These parents often feel guilty about not spending time with their children.
Improved Version (Band 7+): Parents who work long hours often feel guilty about not spending time with their children.

How to use it:
Use "which" to add information about a situation or an object.
Example: Public transport is often crowded, which discourages people from using it.

Quick Tip: Using "which" to comment on the whole previous idea (as shown in the example above) is a classic Band 7+ move!

To get a high score, you must show the relationship between ideas. Are you showing a contrast? A reason? A condition? Use words like although, while, because, and since.

A. Showing Contrast with "Although" or "While"

Weak Version: Technology is helpful. It can also be very distracting.
Improved Version: Although technology is undeniably helpful, it can also be a major source of distraction in the workplace.

B. Showing Cause and Effect with "Since" or "As"

Weak Version: Exercise is important. People should go to the gym.
Improved Version: Since regular exercise is vital for maintaining health, governments should encourage citizens to join local sports clubs.

Key Takeaway: Starting a sentence with "Although" or "While" automatically creates a complex structure that examiners love to see.

3. Conditionals: Talking About the Future or Hypotheses

Conditionals (If/Unless sentences) are perfect for Writing Task 2 because you are often asked to suggest solutions or predict what might happen. The Second Conditional is especially high-value for Band 7+.

The Structure: If + Past Simple, ... would + verb
Example: If the government increased taxes on sugary drinks, people would buy fewer of them.

Using "Unless":
Unless means "if not." It is a great way to show complex logic.
Example: Unless we take immediate action against climate change, future generations will face severe consequences.

Common Mistake to Avoid: Don't forget the comma! If the "If" or "Unless" part comes first, you must put a comma before the second half of the sentence.

4. The Passive Voice: Sounding Academic and Objective

In a General Training essay, you need to sound professional. The Passive Voice shifts the focus from "who" is doing the action to the "action" itself. This makes your writing sound more objective.

Active (Lower Band): People use computers in every office.
Passive (Band 7+): Computers are used in almost every professional environment today.

High-Value Phrase: It is often argued that... (Instead of: People say...)
High-Value Phrase: It can be seen that... (Instead of: We can see that...)

5. Participle Clauses: The "Expert" Structure

If you really want to impress the examiner, use an "-ing" clause to join two actions happening at the same time or to show a result. This is a very advanced structure.

Weak Version: More people are moving to cities. This causes a shortage of housing.
Improved Version: More people are moving to cities, causing a severe shortage of affordable housing.

Analogy: Using a participle clause is like taking a shortcut on a map. You get to the same destination (the meaning) much faster and more smoothly.

Quick Review Checklist

Before you finish your practice essay, check if you have used at least one of each:
• A Relative Clause: Did I use "who" or "which"?
• A Contrast Word: Did I use "although" or "while"?
• A Conditional: Did I use an "if" or "unless" sentence?
• Passive Voice: Did I use "It is argued that" or "is considered"?
• Accurate Punctuation: Did I put commas in the right places for my complex sentences?

Timing and Reality Check

In the real exam, you only have 40 minutes for Task 2. Don't spend 5 minutes trying to craft one perfect, "super-complex" sentence. If you get stuck, write a simple sentence and move on. It is better to have a clear, finished essay with a few simple sentences than a half-finished essay with one amazing paragraph.

Key Takeaway for Band 7+: Variety is the spice of life—and the key to your score. Mix your sentence lengths and types to show the examiner you have full control over the English language.