"Why?" (same as "how come"?) in Spanish is "¿Por qué?" It is pronounced "poor KAY?" Please see this site for confirmation of the translation: http://www.answers.com/library/Translations
come to is venir, and Come is Ven
come and see in spanish is "Venga y vea"
when did you come in = cuando entraste
venir
venga a me
come inside = ¡Pase por favor!
you say: venir beb'e.
your welcome in spanish is DE NADA
Puedes pasar?
it has not traduction
Por que?
puedo entrar?