A complex sentence is a sentence structure that consists of one independent clause (a group of words that can stand alone as a complete sentence) and at least one dependent clause (a group of words that cannot stand alone as a complete sentence because it relies on the independent clause for meaning).
Complex sentences are used to combine ideas, show relationships between clauses, and add depth to writing.
They often employ subordinating conjunctions like “although,” “because,” “while,” or “if” to connect the independent and dependent clauses.
Complex sentences allow for the expression of more intricate and nuanced thoughts.