Come già visto per i tempi del Presente e del Passato, anche il Futuro (Future Tense) ha quattro forme.
- I will work. (Simple future tense)
- I will be working. (Future continuous tense)
- I will have worked. (Future continuous tense)
- I will have been working. (Future perfect continuous tense)
All these sentences refer to the future time.
The verb in sentence 1 is said to be in the simple future tense because it simply makes a statement about an action that is going to be performed in the future. The simple future tense doesn’t give any details about it.
In sentence 2, the verb shows that the action will be continuing for a certain period of time in the future and hence the verb is said to be in the future continuous tense.
In sentence 3, the verb indicates that the action will be completed by a certain point of time in the future and hence it is said to be in the future perfect tense. Note that the future perfect tense emphasizes the completion of the action by a certain point of time in the future.
The verb in sentence 4 is said to be in the future perfect continuous tense because it indicates that the action which has been in progress over a period of time will continue up to a certain point of time in the future. Here the emphasis is on the duration and continuity of the action rather than its completion.