Simple Sentences:
* The cat sat on the mat. (One independent clause)
* The dog barked loudly. (One independent clause)
Compound Sentences:
* The cat sat on the mat, and the dog barked loudly. (Two independent clauses joined by a coordinating conjunction)
* The sun is shining, but it's still cold outside. (Two independent clauses joined by a coordinating conjunction)
Complex Sentences:
* Because the cat sat on the mat, the dog barked loudly. (One independent clause and one dependent clause)
* While the sun is shining, it's still cold outside. (One independent clause and one dependent clause)