Question

rule of past perfect, future perfect​

Answer 1

The Future Perfect Formula

The formula for the future perfect tense is pretty simple: will have + [past participle]. It doesn't matter if the subject of your sentence is singular or plural. The formula doesn't change.

Answer 2

Explanation:

The future perfect is a verb tense used for actions that will be completed before some other point in the future.

The parade will have ended by the time Chester gets out of bed. At eight o’clock I will have left.

Key words: Verb, past participle, tense, preposition

The future perfect tense is for talking about an action that will be completed between now and some point in the future. Imagine that your friend Linda asks you to take care of her cat for a few days while she goes on a trip. She wants you to come over today at noon so she can show you where to find the cat food and how to mash it up in the bowl just right so that Fluffy will deign to eat it. But you’re busy this afternoon, so you ask Linda if you can come at eight o’clock tonight instead.

The past perfect tense is used to show that something happened before another action in the past. It can also be used to show that something happened before a specific time in the past.

To form the past perfect tense you use the past tense of the verb "to have," which is had, and add it to the past participle of the main verb. For example: subject + had + past participle = past perfect tense.

Some examples of the past perfect tense can be seen in the following sentences:

Had met: She had met him before the party