Future Tense Questions Long
In the future perfect continuous tense, the words 'for' and 'since' are used to indicate the duration of an action that will be ongoing up until a specific point in the future.
1. 'For' is used to express the length of time an action will have been happening in the future perfect continuous tense. It is followed by a period of time, such as hours, days, weeks, months, or years. For example:
- "By next year, I will have been studying English for five years." This sentence indicates that the person will continue studying English until next year, and at that point, they will have been studying for a total of five years.
2. 'Since' is used to indicate the starting point of an action that will have been ongoing in the future perfect continuous tense. It is followed by a specific point in time, such as a date or a specific event. For example:
- "By the time she arrives, I will have been waiting since 9 am." This sentence suggests that the person has been waiting since 9 am, and when she arrives, the waiting will have been ongoing for a certain duration.
Both 'for' and 'since' are used to provide additional information about the duration of an action in the future perfect continuous tense. They help to clarify how long the action has been happening or will continue to happen until a specific point in the future.