Form: future perfect
will + have + past participle
The future perfect is formed with the modal will + perfect infinitive without to (have + the past participle form of the verb) in all persons.
Affirmative
| Subject | Auxiliary | Verb (perfect infinitive) | |
|---|---|---|---|
| I You He/She/It We You They |
will | have finished | by then. |
The following contracted forms are often used in spoken and in informal written language:
I will » I'll
you will » you'll
he/she/it will » he'll/she'll/it'll
we will » we'll
you will » you'll
they will » they'll
Negative
| Subject | Auxiliary | not | Verb (perfect infinitive) | |
|---|---|---|---|---|
| I You He/She/It We You They |
will | not | have finished | by then. |
The contracted form won't is often used instead of will not in spoken and in informal written language.
Interrogative
| (Question word) | Auxiliary | Subject | Verb (perfect infinitive) |
|---|---|---|---|
| By what time | will | I you he/she/it we you they |
have finished? |
