The document discusses the future tense in English and how it is used to talk about events that will happen later than the present. It notes that the future tense expresses facts or certainty and uses "will" to indicate what will occur. Examples are provided such as "The engineers will start the tube in 2020" and "The tube will be under the ocean." Questions are also included that are meant to be answered using the future tense, such as whether the tube will connect Britain with America or if the train will use magnetism.