Future perfect
Say what will be finished by a future time with will have + past participle.
Explanation
The future perfect tense in English grammar is used to describe an action that will have been completed by a certain future point in time. It is formed using the modal auxiliary verb "will," followed by "have" and the past participle of the main verb. This tense allows speakers to express the completion of an action relative to another time in the future, indicating that something will be finished before a specific moment.
Structure
- Positive form: will have + past participle. Example: I will have finished the report by tomorrow.
- Negative form: will not have + past participle. Example: She will not have arrived by 8 PM.
- Question form: Will + subject + have + past participle? Example: Will they have completed the project by next week?
The future perfect tense has several key uses
To indicate the completion of an action by a specific future time: It is often used with time expressions such as "by the time," "by then," "by [future date/time]," and "by the end of [time period]."
Example: "By the end of the month, I will have worked here for five years."
To show a future action that will precede another future action: It sets the sequence of events planned or expected to happen before another point in the future.
Example: "I will have finished cooking by the time you arrive."
To express probability or assumption about past actions from the perspective of the future: Sometimes it is used to make guesses or assumptions about what might have happened by now or by a specific moment in the past, often reflecting on it from a future perspective.
Example: "He will have already heard the news."
Key Points
- The future perfect tense is particularly useful for emphasizing the completion of an action before another future event or time.
- It is often used with time phrases to specify the future point by which the action will be completed.
- The tense can also indicate assumptions or predictions about past events, viewed from a future standpoint.
Understanding and using the future perfect tense correctly can greatly enhance the clarity and precision of expressing future events and actions in relation to time.
Practice
Exercise 1
Choose the correct answer.
1. By next week, I ______ my project.
2. By the end of this year, they ______ to five different countries.
3. I ______ not ______ my decision by tonight.
4. They ______ probably ______ their new home by next month.
5. By the time we get there, the show ______ already ______.
6. By next year, I ______ in this city for a decade.
7. ______ you ______ completed your training by the end of next month?
8. They ______ the house by next year, won't they?
9. By the time you wake up, I ______ for my flight.
10. He ______ enough money to buy a car by the end of the year.
Exercise 2