"The children have seen a dolphin."

Translation: Dzieci zobaczyły delfina.

[AngelikaKr15]

i think widzialy is a more accurate translation....if the sentence was the children saw a dolphine, zobaczyly would be more appropriate

[vytah]

Agreed.

Polish perfective vs imperfective doesn't exactly match English perfect vs imperfect.

[xanderofszki]

I do think that this is to be true but I do believe "widzialy" and "zobaczyły" and "zobaczyly" should be accepted her as the sentence here in English can be interpreted as the past and present.

[Glen624972]

I don't understand the difference between "widzialy" and "zobaczyly." Any help would be appreciated.

[MarjanvanK]

should you use < oni widzieli > when you have seen a human beeing and < oni zobaczyli > when you have seen an animal or something inanimate ? ?