0 the form of the verb that is used to show that an action will have been performed by a particular time. In English it is formed by "will have" or "shall have" and a past participle:
1 the tense formed using "will have" or "shall have" with a past participle to show that an action will be completed by a particular time in the future:
In the sentence "On 14 October I will have worked here ten years", there is an example of the future perfect.
The future perfect is formed by putting 'will have' before the past participle of the verb.
