Let’s use the example sentence: “I like to read.” This is a simple sentence because it only has one subject and verb.
Using a subordinating conjunction and a comma, you could say something like: “I like to read, but only Harry Potter.” As you can see, we used a comma that connects the two independent clauses, and we used a conjunction (but) to connect the two clauses.
To make this a complex sentence, you could say: “When I read, it must be Harry Potter.” At the beginning of the sentence we have a dependent clause, and at the end of the sentence we have an independent clause.
Hope this helps :)
