Here are different examples of some sentence structures:
Complex: To prove this, let facts be submitted to a candid world.
Complex/Compound: We hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty and the pursuit of happiness.
Simple: They too have been deaf to the voice of justice and consanguinity.
Compound: In every stage of these oppressions we have petitioned for redress in the most humble terms: our repeated petitions have been answered only by repeated injury.

All sentences were taken from the Declaration of Independence