Formation of compound sentences

A compound sentence is one having two or more co-ordinate clauses. It is formed with the help of coordinating conjunctions.

By using and

Two simple sentences can be combined into one compound sentence by using and.

  • The dog got up. It walked away.
  • The dog got up and walked away.
  • He opened the box. He then closed it.
  • He opened the box and then closed it.
  • We drank. We danced.
  • We drank and danced.
  • She won the prize. She astonished us all.
  • She won the prize and astonished us all.

Using not only…but also

  • He had many friends. He also has many enemies.
  • Not only had he many friends, but also several enemies.
  • We go there in winter. We go there in summer as well.
  • We go there not only in winter but also in summer.
  • The place was cold. It was also damp.
  • The place was not only cold but also damp.
  • She plays the piano. She also plays the violin.
  • She not only plays the piano, but also the violin.

Using as well as

  • Tom took the test. John took the test.
  • Tom, as well as John, took the test.
  • Alice was delighted to hear the news. Mary was delighted to hear the news.
  • Alice, as well as Mary, was delighted to hear the news.


When two subjects are connected by as well as, the verb is singular if the first subject is singular. Also note the use of comma.