This is a great resource or reviewing, previewing, or giving a short lesson on subjects and predicates.
Guided notes for this PowerPoint can be found at https://www.teacherspayteachers.com/Product/Subjects-and-Predicates-Guided-Notes-3820757
The presentation covers subjects, predicates, simple subjects and predicates, and complete subjects and predicates. Included in the presentation is a link to The Tale of Mr. Morton on Youtube, which is a great earworm for remembering the basic concepts. There are also multiple opportunities to practice (formative assessment).