Bedeutung von “oh” im Essential English Dictionary

oh

exclamation uk /əʊ/

A1 said when you are surprised, pleased, disappointed, etc.:

Oh, no! I don’t believe it!
‘I don’t think I can come.’ ‘Oh, that’s a shame.’

A1 used to introduce an idea that you have just thought of, or something that you have just remembered:

Oh, and don’t forget to lock the door.

used before you say something, often before replying to what someone has said:

‘Ian is leaving now.’ ‘Oh, I didn’t realize that.’

(Definition von “oh” aus dem Cambridge Essential Dictionary © Cambridge University Press)