Types of sentences (simple, compound, complex, compound-complex)
Simple Sentence
A simple sentence consists of one independent clause with a subject and verb.
Example: Mary likes tea.
Compound Sentence
A compound sentence combines two or more independent clauses using coordinating conjunctions or semi-colons.
Coordinating conjunctions (FANBOYS): For, And, Nor, But, Or, Yet, So
Example: Allen likes tea and John likes coffee.
Complex Sentence
A complex sentence includes an independent clause and a dependent clause introduced by subordinating conjunctions or relative pronouns.
Subordinating conjunctions: After, Although, As, Because, Before, How, If, Once, Since, Than, That, Though, Till, Until, When, Where, Whether, While
Relative pronouns: That, Which, Who, Whom, Whose
Example: We missed our plane because we were late.
Compound-Complex Sentence
A compound-complex sentence has at least two independent clauses and one or more dependent clauses.
Structure: Independent clause, Subordinating conjunction, Dependent clause, Coordinating conjunction, Independent clause
Examples: John didn't come because he was ill so Mary was not happy.