Judging by that great tan, it looks like you spent most of your vacation on the beach.
- Viendo lo moreno que estás, parece que has pasado la mayor parte de tus vacaciones en la playa.
Mother was very busy most of the time.
- Mamá estaba muy ocupada la mayor parte del tiempo.
We spent the major part of our holidays in the country.
- Pasamos la mayor parte de nuestras vacaciones en el campo.
I spent the major part of my vacation at my uncle's.
- Pasé la mayor parte de mis vacaciones en la casa de mi tío.