Final answer:
ASL uses sign incorporation and time indicators to show events in the past, present, and future.
Step-by-step explanation:
ASL, or American Sign Language, can show that events occur in the past, present, and future through sign incorporation and time indicators.
Sign incorporation involves using specific signs to represent past, present, and future events. For example, the sign for 'yesterday' is incorporated in the past tense, the sign for 'now' represents the present tense, and the sign for 'tomorrow' indicates the future tense.
ASL also uses time indicators such as head shaking or nodding to further clarify the timeframe of an event. These indicators help convey the concept of time in ASL and allow for accurate communication about past, present, and future events.