Future Perfect Simple
1. Use of the Future Perfect Simple
We use the future perfect simple to say that something we be done, achieved or finished by a certain point in the future.
2. Form
will + have + past participle
3. Example
- The builders say they will have finished by next Thursday.
- At Christmas we‘ll have been friends for two years.
4. Diagram showing usage of the Future Perfect Simple
The emphasis is on the action, not the duration.