French phrase
J'ai constaté ~.
Meaning
I have observed ___.
When to use it
States an observation as an established fact. It has a formal, objective tone and suits reports or academic writing.
Example dialogue
J'ai constaté un retard dans la livraison.
I have observed a delay in the delivery.
D'accord, nous allons appeler le transporteur.
Understood, we will call the carrier.