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So don't worry so much about how to use  had had  as a unit of grammar, they will come together naturally when you want to express the verb ' to have ' in the past perfect. Let's consider a different verb for a moment like  to want .
Using Hasta. 1  1. Use hasta when meaning âuntil.â In expressions for which to actually means until, hasta is the most accurate translation. Example: to the end of the week. 2  2. Translate up to as hasta.. If a condition is true up to a certain point, use hasta.