Here is a sentence in English using when to express an action that will have been completed in the future before another action:
When I have finished my work, I will watch TV.
When I finish my work, I will watch TV.
-> Note how the verb after when is in the Present Perfect or Present tense.
Now look at these sentences using quand in a similar context:
Note how in French you use Le Futur Antérieur after quand in order to show that this action will come before the other one.
Note that this rule also applies to the conjunctions lorsque (when), après que (after) and une fois que (once):
Lorsque j'aurai fini mon travail, je regarderai la télé.When I have finished my work, I'll watch TV.
See also previous lesson Quand/pendant que + future tense (Le Futur Simple) - not the present tense = When/while I do something in the future (Sequence of Tenses in French)
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Examples and resources
Lorsque j'aurai fini mon travail, je regarderai la télé.When I have finished my work, I'll watch TV.
Quand elle sera arrivée chez nous, la fête commencera.When she's arrived at our place, the party will start.
Lorsqu'elle sera arrivée chez nous, la fête commencera.When she arrives at our place, the party will start.
