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 is often used for predictions, promises, or spontaneous decisions. For instance, if someone says, "I will help you," they are making a promise to assist. The Future Simple is a straightforward way to express future intentions or events without complex structures.