(i) During the time that, as long as
Ex: While there is hope there is life.
While he was sleeping, an enemy entered in the house.
(ii)At the same time that
The girl sang while the boys danced
(i) During the time that, as long as
Ex: While there is hope there is life.
While he was sleeping, an enemy entered in the house.
(ii)At the same time that
The girl sang while the boys danced