Tenses Questions Long
The future perfect tense is used to describe an action that will be completed in the future before another action or a specific time. When using the future perfect tense with 'by' and 'before', there are certain rules to follow.
1. Using 'by':
When 'by' is used with the future perfect tense, it indicates that the action will be completed before a specific time in the future. The structure is as follows:
Subject + will have + past participle + by + specific time
Example:
- I will have finished my assignment by tomorrow evening.
- They will have completed the project by the end of this month.
In these examples, the action of finishing the assignment and completing the project will be done before the specific time mentioned (tomorrow evening and the end of this month, respectively).
2. Using 'before':
When 'before' is used with the future perfect tense, it indicates that the action will be completed before another action takes place. The structure is as follows:
Subject + will have + past participle + before + another action
Example:
- She will have left before I arrive.
- They will have eaten dinner before the movie starts.
In these examples, the action of leaving and eating dinner will be completed before the arrival and the start of the movie, respectively.
It is important to note that the future perfect tense with 'by' and 'before' is used to emphasize the completion of an action in relation to a specific time or another action in the future. It is often used to talk about deadlines, schedules, or events that will occur in the future.