What type of sentence structure includes both independent and dependent clauses?

A complex sentence is a type of sentence structure that contains at least one independent clause and at least one dependent clause. The independent clause can stand alone as a complete thought, while the dependent clause cannot, as it often begins with a subordinating conjunction (such as because, although, or since) or a relative pronoun (such as who, which, or that). This combination allows for more nuanced expression by linking related ideas, indicating relationships of time, cause, or condition between the clauses.

For instance, in the complex sentence “Although it was raining, we went for a walk,” the first part is a dependent clause that cannot stand alone, while the second part is an independent clause that can. This structure enhances writing by adding depth and clarity to ideas being communicated.