Every sentence must have a subject and a predicate. The subject is the who or what the sentence is about and the predicate is what the subject is doing, did do, or is going to do. 1. Tap the button. 2. Use the tools to complete the worksheet by underlining the capital letter in GREEN, the subject of the sentence in YELLOW, the predicate in ORANGE, and period in RED. 3. Tap the when you are done to add to your journal.