Essentials (Language Arts) program teaches us that there are only seven different sentence patterns in the English Language. The sentence can vary based on it's purpose or it's structure, but it will still fit into one of these seven patterns.
We have sentences from our text that we can learn and memorize, but I've often found, we learn better, and master the skill, when we develop our own sentences. Yesterday I had my children do just that. Here are their simple sentences for each pattern. Since it's my son's third year in the program, he's mastered all seven patterns. Since it's my daughter's first year, she's only learned up to pattern three.