The little prince (fairy tale)

Once upon a time there was a prince, that wanted to became a king. So his father told him that he had to go to the forest and stay the night there and then he had to come back again. So the prince did that and spent the night into the forest, and he came back the following day. When he arrived at the castle his father asked him, if the forest was something special. And he said, not it is only a forest, nothing strange. Well the father said nothing.
Two weeks later the father dies. And the young prince became a king. But he knew he had to return to the forest to spent one more night more, to decript what his father said. So he decided to return, and this night he started to listen to the animals' noises, he could see the flowers, he could drink water from the river. And he realised what his father meant.

(Adated from and anonimous history)

Hi Maximo, puedes decir o "he could see the flowers, he could drink the water" o "he saw the flowers, he drank the water". Si usas "could" siempre el verbo que sigue es en infinitivo.