Try another method of english sentences

To form complex sentences, you combine an independent clause with at least one dependent clause. An independent clause can stand alone as a sentence, while a dependent clause cannot. Dependent clauses often begin with subordinating conjunctions (like "because," "although," "since," "while," "if," "when") or relative pronouns (like "who," "which," "that").

For example, in the sentence "Although it was raining, we went for a walk," the independent clause is "we went for a walk," and the dependent clause is "Although it was raining." The subordinating conjunction "although" connects them.