What is the difference between "de" "a"?

Question

Hi all Please let me the difference between the following sentence?

1. Vuelvo a casa a las seis menos cuarto.

2. Vuelvo de casa a las seis menos cuarto.

3. Nos gusta salir a excursión en primavera.

4. Nos gusta salir de excursión en primavera.

Thanks all of you!

#3 in English could be "go for an outing" - salir a excursión. - Jubilado, Mar 14, 2015

Answer 1

Vuelvo a casa a la seis. = I return home at six

Vuelvo de casa a las seis = I return from home at six.

Nos gusta salir a excursionar en primavera. = we like to go out excursioning in Spring.

Nos gusta salir de excursión en primavera. = We like to go out on a excursion in Spring.

Would that be of help?

Edit: I added the bolded part.

Thank you for your explanation. - tacolai, Mar 14, 2015

:) - ian-hill, Mar 15, 2015

Answer 2

Worth another round for learning exercise.

:) - ian-hill, Mar 15, 2015