• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Home of English Grammar
  • Home
  • Exercises
  • Matches
  • Posts
  • Rules
  • Social Media Archive
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Vocabulary
  • Writing Guides
  • Try Pro free

Complex and Compound-Complex Sentences

September 6, 2010 pdf

Complex sentence

Examine the following sentences.

  • I will say what I like.
  • When we went there we found that he had gone.

Sentence 1 consists of two clauses – I will say and what I like. The first is an independent clause which can stand by itself and so it is called the main clause or principal clause. But the second clause cannot stand by itself. It depends on the first clause. It is therefore called a subordinate clause. In sentence 2, we can find three clauses – when we went there, we found, that he had gone. Here the main clause is we found, and the other two are subordinate clauses.

A sentence which consists of one main clause and one or more subordinate clauses is called a complex sentence.

The compound-complex sentence

Look at the following sentences:

  • While the man played the violin, the boys sang and the girls danced.
  • I knew that he was ill, but I did not know that he was suffering from cancer.

In sentence 1, we can find two main clauses:

a) the boys sang
b) the girls danced

and one subordinate clause:

c) while the man played the violin

In sentence 2, there are two main clauses:

a) I knew
b) but I did not know

and two subordinate clauses

c) that he was ill
d) that he suffered from cancer

A sentence containing two or more main clauses and at least one subordinate clause is called a compound-complex sentence.

  • Share
  • Post
  • Post
  • Reddit
  • Email
  • WhatsApp
NEW: Try Matches, our daily vocabulary challenge. Pick a topic and level and match words with definitions to boost your vocabulary.

Primary Sidebar

2,485,429 
761,532 
Improve Your English
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.
Grammar Checker - Try Now

Latest Posts

  • 100 Best Synonyms for “Prove” October 12, 2026
  • 100 Best Synonyms for “Repressed” October 12, 2026
  • 100 Best Synonyms for “Ambiguity” October 12, 2026
  • 100 Best Synonyms for “Paradigmatic” October 12, 2026
  • 100 Best Synonyms for “Propaganda” October 12, 2026
  • Inversion and Fronting Review Exercise October 12, 2026
  • 100 Best Synonyms for “Agreement” October 12, 2026
Home of English Grammar

Free English grammar exercises, rules and vocabulary lists, with new exercises every week. Join the leading English grammar site with over 3 million followers.

Try Pro free

Learn

  • Exercises
  • Matches
  • Grammar rules
  • Vocabulary lists
  • Writing guides
  • Online tools

More

  • Top social media posts
  • Various posts
  • Free grammar guide (PDF)
  • Contact

Pro

  • What is Pro?
  • Pro account
  • Pro exercises

Copyright © 2026 EnglishGrammar.org

  • Disclaimer
  • Privacy policy
  • Refund policy
  • Terms
  • Sitemap
Improve Your English
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.