Every sentence must have a subject + verb + complete thought.

4 functional types (declarative, interrogative, imperative, exclamatory).

4 structural types (simple, compound, complex, compound-complex). Simple One independent clause “She sings well. “Compound Two independent clauses joined (FANBOYS: for, and, nor, but, or, yet, so)“I like tea, but he prefers coffee. “complex One independent + one dependent clause (uses because, if, when, etc.)“If it rains, we will stay home. “Compound-Complex Two independent + one dependent clause “She laughed when she won, and I cheered.”