Simple Sentences
Simple sentences do not necessarily have to be short sentences.
True, they can also be long.
When a sentence is composed of just one clause (an independent clause).
What is a simple sentence
Simple sentences require one independent clause with which two parts of a grammatical sentence.
What is a subject and a predicate?
Thomas marched over to Andrew’s house.
Thomas... (Subject)
...marched over to Andrew’s house. (Predicate)
Jonah and Mary constructed a simplified version of the Eiffel Tower with Lego(s).
Jonah and Mary... (Subject)
...constructed a simplified version of the Eiffel Tower with Legos. (Predicate)