WAS/WERE GOING TO AND WAS/WERE SUPPOSED TO

WAS/WERE GOING TO AND WAS/WERE SUPPOSED TO

 

past be	going to + infinitive supposed to + infinitive	meaning
was / were	going to + infinitive supposed to + infinitive	We often use was / were going to or was / were supposed to to apologise  for not doing something. We usually give a reason.
Sorry, I was going to call you back last night, but I didnʼt get home until late.

was / were going to:

past be	going to + infinitive	meaning
was / were	going to + infinitive	To talk about plans we made in the past which didnʼt happen, or wonʼt happen in the future.
We were going to visit the Bradleys later that year, but we didnʼt go for ...  [some reason]		(They planned to visit the Bradleys, but they didnʼt visit them.)
We were going to spend our anniversary in the cottage in Wales where we had our honeymoon, but it was already booked.		(They planned to spend  their anniversary in the cottage in Wales, but now they arenʼt going to go there.)

was / were supposed to:

past be	supposed to + infinitive	meaning
was / were	supposed to + infinitive	To talk about things we agreed to do or other people expected us to do, but we didnʼt do.
Tom was supposed to book the cottage months ago, but he forgot.		(Tom agreed to book the cottage, but he didnʼt book it.)
I was supposed to call you back, wasnʼt I? Sorry, Leo, I was out all day.		(Leo expected his mother to call him back, but she didnʼt.