Így is egy mondatban vannak:
While we were walking down the street an ambulance sped by us.
When the phone rang I woke up.
As I was getting off the bus I saw Peter.
While they were sitting in the park they heard a loud noise.
She was walking down the street when she found a bracelet. (Szerintem itt az elején is helyes, attól függ mit akarunk kiemelni.)
As we were leaving Amanda and her friends arrived.

Ha középre kell a kötőszó:
An ambulance sped by us while we were walking down the street.
I woke up when the phone rang.
I saw Peter as I was getting off the bus.
They heard a loud noise while they were sitting in the park.
She found a bracelet when he was walking down the street. (Itt a másik értelemben van)
Amanda and her friends arrived as we were leaving.