A tense formed by will have or shall have followed by the Past participle:
She will have worked.
Uses:
To predict that a future action will be finished by a particular time:
Key staff will have completed CC1 and CC2 training by April 1993.
To make deductions:
Jennifer will have had enough by now.
We’re sure club members will have worked very hard to make this event a great success.
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A tense formed by will be or shall be followed by the Present Participle:
I shall be working.
Uses:
To describe a future action, but emphasizing that it will go on over a period of time:
I shall be working quite late tonight.
To refer to planned or arranged events in the future:
Mr Wilkins will be working at the library during the next year.
To make promises or threats:
I will be making an announcement to the audience before the curtain rises.
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