while

First, how would you make that into one sentence, Anonymous? Post your sentence here and we'll check it for you.

He phoned while you were out . Is this correct ?

AnonymousHe phoned while you were out . Is this correct ?

Absolutely! Good work.

Thanks . Can we use past simple after while or it should be progressive ?

Anonymous Can we use past simple after while or it should be progressive ?

It depends on the nature of the actions.

He phoned while you were out. (an instantaneous action + a condition)
He phoned while you were taking a bath. (an instantaneous action + a durational matrix action)
He was cooking while you were taking a bath.

Many thanks .Your answer helped me alot . I have another question . I fell asleep while I had been having a lesson .
Is this correct or I should use past progressive here ?

AnonymousIs this correct or I should use past progressive here ?

Use past progressive; there is no reason for past perfect.

OK. Thanks