[hela]

Dear MrP, yes I meant the indicative, sorry.
Would you have more examples for me where the difference between #2 and #3 is clear?

One more point, if I say:

4) "I HAD to tidy up my room..." = past obligation and the action was performed

whether if I say:

2 + 3) "I WAS to tidy up / I WAS TO HAVE tidied up..." = past obligation / expectation (?) but the action was not performed.

Could it be that if we use the first personal pronoun with "bo to + present infinitive" it seems clear that the subject didn't perfom the obligation. "I was to cook dinner last night." = I didn't ?

Whether if we use other personal pronouns there could be doubt about the performance?
"They were to stop off in Paris / Mary was to cook dinner last night" = we don't know if the actions were performed or not?

Have a nice day,
Hela