Compound and complex sentences

Compound sentence is formed by coordinating or independent clauses; whereas, complex sentence is formed by connecting depending clause with main clause. Both compound and complex sentences are connected by different conjunctions.

Four types of sentence structures

  1. Simple sentence — subject + predicate
  2. Complex sentence — main clause + subordinating clause.
  3. Compound sentence — two independent clauses + main clause
  4. Mixed sentence — it includes two or more than two independent and dependent clauses.

 Formation of complex sentence

  1. There should be separate subject and predicate for each clause.
  2. The subordinate clauseshould depend on the main clause.
  3. Both main and subordinate clauses shouldn’t be equal
  4. Subordinating conjunctions should be used to form complex sentences.
  5. Punctuation marksare applicable when the dependent clause is used to begin the sentence.

1. Examples of complex sentences

Complex sentences are formed with–
  1. Noun clause + main clause
  2. Adjective clause + main clause
  3. Adverb clause + main clause

2. Complex sentence with noun clause

Noun clause is also known as subordinating clause, and used to form complex sentences.

  • I do not know how he solved the problem. (main clause +noun clause)
  • She announces that she is not going to support our proposal.
  • I thought that he might help us.
  • Can you tell me when the delayed train will arrive?

3. Complex sentence with adjective clause

  • This is the place where I learned to drive. (main clause + adjective clause)
  • I think it was Sunday, when we went for picnic.
  • August 15th is the day when India got freedom.
  • June, when monsoon arrives, is the best month to swim.
  • Antarctica where temperature is too low is the best place for polar bear.

4. Complex sentences with adverb clause

There are various types of adverb clauses, such as, adverb clause of time, reason, cause, etc. Here, I’m going to use adverb clause of time.

  • As soon as we reach at the reservation centre, we will let you know about status. (Adverb clause of time + main clause)
  • We will let you know the status as soon as we reach at the reservation centre.
  • As soon as it rains, children start enjoying. (for present sense)
  • As soon as they win a game, they start dancing.

 Formation of compound sentences

  1. There should be separate subject and verb for each clause.
  2. The two clauses shouldn’t dependon each other.
  3. Both clauses should be equal importanceand closely related to each other.
  4. Coordinating conjunctions are used to form compound sentence.
  5. Commas or semicolon is placed before joining coordinating conjunction.

Examples of compound sentences

1. The winning team invited at the stage. Spectators welcomed them cheerfully.

  • The winning team invited at the stage; and, spectators welcomed them cheerfully.

2. I like to eat simple veg. My brother is fond of spicy chicken.

  • I like to eat simple veg; whereas, my brother is fond of spicy chicken.

3. He is religious. He is emotional.

  • He is both religious and emotional.

4. India is culturally diverse country. India is a secular nation.

  • Not only is India culturally diverse country, but it also a secular nation.

5. He is a talented student. He is a gifted student.

  • He is either a talented or gifted student.
  • He is neither a talented nor gifted student.

These are some important examples of compound and complex sentences formed with coordinating and subordinating clauses with main clause.

Difference between relative pronouns and adverbs

Usages and examples of compound sentences

Indian politics after independence