1. Grammar & usage
SENTENCE STRUCTURES

2. a sentence that has only one clause.
Simple sentence
Ex: The tone of this writing is nostalgic.
a sentence that has only one clause.

3. Compound sentence
Coordinating conjunction (FANBOYS): for, and, nor, but, or, yet, so
EX: The tone of the first poem was joyful, but the tone of the second poem was gloomy.
a sentence with two or more clauses joined by a coordinating conjunction

4. two or more clauses joined with a subordinating conjunction
Complex sentence
Subordinating conjunction - as, because, although, since, before, when, once, if, even if, whatever, whenever, during, until, unless, wherever, whether, while, as if, that
Ex: The student failed to determine the tone of the poem because he failed to give evidence from the text to support his answer.
two or more clauses joined with a subordinating conjunction

5. Compound-complex sentence
Coordinating conjunction (FANBOYS): for, and, nor, but, or, yet, so
Subordinating conjunction - as, because, although, since, before, when, once, if, even if, whatever, whenever, during, until, unless, wherever, whether, while, as if, even if, that
Ex: The tone of the first poem was joyful, but the tone of the second was gloomy, although the student got neither poems’ tone correct.
three or more clauses joined by coordinating and subordinating conjunctions