Questions & Answers about Minun täytyy siirtää nuo pinot.
Why does the sentence start with minun instead of minä?
This is a classic obligation sentence. With verbs like täytyy (must), the person who has to do the action is put in the genitive case (minun, sinun, etc.). The verb täytyy itself stays exactly the same no matter who is doing the action.
Why is the object nuo pinot in the basic nominative plural form?
When you do an action to whole, countable plural objects, they take the nominative plural form (ending in -t). You might remember that singular objects have special rules in täytyy sentences, but plural objects like nuo pinot are always in the nominative plural regardless of the verb!
Since we are learning about plural local cases (like noissa or niistä), why is it just nuo here?
Nuo (those) is the basic plural form of tuo (that). You would only use a local case if the stacks were a location (for example, noista pinoista meaning "out of those stacks"). Here, the stacks are just the direct object being moved, so they take the basic plural form.
Could I use the verb muuttaa here instead of siirtää?
No, and this is a very common mix-up! Siirtää means to physically move or transfer an object from one place to another. Muuttaa is used when a person is moving house, or when something is changing.