French phrase
Ça m'étonnerait que ~.
Meaning
I'd be surprised if ___.
When to use it
Expresses doubt about a possibility. Common in everyday conversation and softens the doubt.
Example dialogue
Tu crois que Marie va réussir l'examen ?
Do you think Marie will pass the exam?
Ça m'étonnerait que Marie réussisse.
I'd be surprised if Marie passed.