Clause Types (Simple/Compound/Complex)
Clauses are groups of words with a subject and verb, and come in three types: simple, compound, and complex.
B1Sentence Structure
Rule
A clause is a group of words with a subject and a verb. There are three main types of clauses: simple, compound, and complex.
Rule
- Simple clause: One independent clause. For example: I go to school.
- Compound clause: Two or more independent clauses joined with 'and', 'but', or 'or'. For example: I go to school and I study hard.
- Complex clause: An independent clause and one or more dependent clauses. For example: I go to school because I want to learn.
Usage
- We use simple clauses for short, clear statements.
- We use compound clauses to connect two equal ideas.
- We use complex clauses to show relationships between ideas.
Examples
- I eat breakfast.
- I go to school and I study hard.
- I go to school because I want to learn.
- Although I was tired, I went to the party.
- If it rains, I will take an umbrella.
- The book, which is on the table, is mine.
Common Mistakes
- Wrong: I go to school and study hard. Correct: I go to school and I study hard.
- Wrong: Because I was tired but I went to the party. Correct: Although I was tired, I went to the party.
- Wrong: The book which on the table is mine. Correct: The book, which is on the table, is mine.
Tip
Think of clauses like building blocks: simple clauses are single blocks, compound clauses are blocks joined together, and complex clauses are blocks with smaller blocks attached.
Quick check
Which of the following sentences is a complex sentence?
Where this matters in your exam
Assessed in Writing Task 2 for clear expression.
- Writing Task 2
Use complex sentences to express ideas clearly.