"The women have to enter the gallery."
Translation:Las mujeres tienen que entrar a la galería.
Literal translations of Spanish to English will often leave you with two prepositions in English, or sometimes with none when you're use to having one. The only way to approach this is memorization. Certain verbs require certain prepositions and attempts at literal translations will only hold you back. You just have to memorize the verb/preposition combinations.