6.1 Conventions of Standard English

Combine Sentences

  • A simple sentence has one subject and one predicate. It tells one complete thought.

    Molly ran home.

     
      
  • Two simple sentences may be joined to form a compound sentence. A compound sentence has two subjects and two predicates. It tells two complete thoughts.

    Tom walked the dog.

    Melanie played with the cat.

    Tom walked the dog, and Melanie played with the cat.

     
      
  • You can combine two simple sentences by joining them with a conjunction, such as and, but, or, and so. Use a comma before the conjunction that joins the two sentences.

    I want to watch the movie.

    I have to do my homework.

    I want to watch the movie, but I have to do my homework.

     
      

Now practice combining sentences.
Click the Practice button below.

After you have practiced, go back to the Main Page
to learn more about sentences.