Grammar study page: future perfect simple

Structure of future perfect simple
The film will have started by the time we get there.	The film will not (won't) have started by the time we get there.	Will the film have started by the time we get there?

Future perfect - common mistakes
Common mistakes	Correct version	Why?
The film will already has started by the time we get home.	The film will already have started by the time we get home.	The form of the future perfect is will + have + past participle.
Will have you finished it by the time I come back?	Will you have finished it by the time I come back?	See word order and the form of the question above.

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