Comma in Compound Sentences
A compound sentence refers to a sentence made up of two independent clauses (or complete sentences) connected to one another with a coordinating conjunction. Coordinating conjunctions are easy to remember if you think of the words "FAN BOYS": For And Nor But Or Yet So The following are examples of compound sentences: Johan waited for the train, but the train was late. Mariam and Sakinah arrived at the bus station before noon, and they left on the bus before I arrived. Mariam and Sakinah left on the bus before I arrived, so I did not see them at the bus station. USE A COMMA BEFORE A COORDINATING CONJUNCTION THAT JOINS TWO INDEPENDENT CLAUSES. HOWEVER, COMMA IS NOT NECESSARY FOR SHORT CLAUSES. If the two "sentences" (known as independent clauses) are very short, it is acceptable – for style purposes – to omit the comma. Johan joined the Army and Daud joined the Marines. Johan joined the Army, and Daud joined the Marines.