The Future Simple Tense is used to describe actions that will happen at a later time. It is formed using the auxiliary verb "will" followed by the base form of the main verb. For example, in the sentence "I will eat," the action of eating is expected to occur in the future. This tense can also express predictions, promises, or spontaneous decisions. For instance, "She will call you later" indicates a future action. The Future Simple Tense is essential for discussing plans and expectations related to events, such as meetings, trips, or projects.