La subordonnée circonstancielle est, en règle générale, mobile et supprimable.
As soon as you will have finished we will go out.
I have a dog in my house.
You will wait him until he gives you back the book.
He won’t wait for you because he will be on the train of five o’clock
You are enjoying yourself noisily where as I am working
If it is sunny, we will go out.
He works so much that he will have finished earlier