The sentence "Although I am sick, I will go to work today" is a complex sentence.
Here's why:
* Complex Sentence: A complex sentence contains one independent clause (a complete thought) and at least one dependent clause (a clause that cannot stand alone).
* Independent Clause: "I will go to work today" (This can stand alone as a sentence.)
* Dependent Clause: "Although I am sick" (This cannot stand alone as a sentence because it begins with a subordinating conjunction "although".)
Let's explore the other sentence structures you mentioned:
* Simple Sentence: Contains only one independent clause (e.g., "I went to work.")
* Compound Sentence: Contains two or more independent clauses joined by a coordinating conjunction (e.g., "I went to work, but I felt sick.")
* Compound-Complex Sentence: Contains two or more independent clauses and at least one dependent clause (e.g., "I went to work, but I felt sick because I had a cold.")