If I were to picture sth...

If I were going to die . If I were to leave ,I would remember you forever If I were able to change this rule,I would. if i were a bird,i would fly to you If i were U. if i were you if i were a i think they were sth He spoke to me as if I was/were deaf if i were listenning to the radio是什么时态 If you were older,I ____you to go there yesterday If i were you,i might fly to London.为什么用were呢?而不是was?