I am wondering about the meaning of a sentence which includes the “will already have….” structure?
The exact sentence is a part of IELTS practice test which says:
” ….in today’s tutorial we’re going to discuss the essays that you have to submit by the end of next week. Some of you will have already started them,… “.
That is simply a declarative clause in the Future Perfect tense.
The formula is : Subject will have Perfect Participle (Complement).
Some of you will have already started them,
will + have = future perfect auxiliary verbs
started== principle verb(in its past participle form).
them== Complement-> Direct Object.
already= just an adverb->Adjunct .
And as exactly stated in your sentence by the end of next week.
Future Perfect is usually used when an action takes place before another in the future.
This website is quite comprehensive when it comes to tense.