Questions & Answers about Es mi décimo viaje a México.
Why does this sentence use décimo instead of décima?
Ordinal numbers act like adjectives, so they must match the gender of the noun they describe. The noun here is viaje (trip). Even though viaje ends in an 'e', it is a masculine word, so it takes the masculine form décimo.
Do I need to shorten décimo before a masculine noun, like we do with primer and tercer?
Why does décimo come before viaje? I thought Spanish adjectives usually go after the noun.
While descriptive adjectives (like colors or sizes) usually go after the noun, ordinal numbers like décimo are an exception. They almost always go before the noun they modify, just like they do in English.
Why is it viaje a México instead of viaje en México?
The preposition a means 'to' when talking about destination or direction. When you take a trip to a place, you use viaje a. Using en would mean 'in', which changes the meaning to a trip happening entirely inside of Mexico.