- the conversation between two persons:
one person:He returned home with a tiger club.
second person: Hi wife can’t have been very pleased about that.
why can’t we also say:…couldn’t have been very pleased…?
2.the conversation between two persons:
one person: He was very sick last night.
second person: The meat we had for supper can’t have been good.
why can’t we also say: …couldn’t have been good?
- what is the difference between for example: ‘can’t have been’ and ‘couldn’t have been’? when should we use each of them?
Thank you very much.