English Grammar    Units    English Sentences    Overview


A sentence is a group of words that expresses a complete idea. A sentence is the largest independent unit of grammar: it always begins with a capital letter and ends with a period, question mark, or an exclamation mark.

English sentences can be classified in two different groups:

By Structure
  1. Simple Sentence
  2. Compound Sentence
  3. Complex Sentence
  4. Compound-Complex Sentence
By Purpose
  • Declarative: “The weather is rainy.”
  • Imperative: “Don't forget to bring your umbrella.”
  • Interrogative: “Will it rain tomorrow?”
  • Exclamatory: “Not again!”