Simple subject/predicate: As you can see from the example sentences above both the subject and the predicate can consist of many words. The simple subject is the main word in the subject, and the simple predicate is the main word in the predicate. The simple subject is always a noun/pronoun and the simple predicate is always a verb.
In the following sentences the simple subject is shown in red and the simple predicate is shown in green.
From the last three examples sentences above you will notice that the simple subjects and simple predicates can be more than one word.
Advice: To write strong, clear sentences you must know who or what you are writing about (subject) and what you want to say about them or it (predicate). Your writing will be more interesting if the subject is not the first thing in every sentence you write.