Questions & Answers about Fui al palacio ayer.
Why does fui mean "I went" here? I thought it also meant "I was".
Why is it al palacio instead of a el palacio?
In Spanish, whenever the preposition a (to) meets the masculine word for "the", which is el, they combine to form the mandatory contraction al. You will never see a el written as two separate words.
Where is the word for "I" in this sentence?
In Spanish, you can usually drop subject pronouns like yo (I) because the verb form already tells us who is doing the action. Since fui only belongs to "I", adding yo is optional and usually left out unless you want to add emphasis.