Questions & Answers about Hänen täytyy kantaa ämpärit.
Why is the object ämpärit (nominative plural) instead of partitive plural?
When an action is completed and covers the whole object, we use a total object. For plural words, the total object takes the -t ending (nominative plural). Because he is carrying all of the specific buckets, and not just an undefined amount, we use ämpärit.
Sentences with täytyy drop the -n from singular objects. Does täytyy change how plural objects work too?
No, it doesn't! Plural total objects always look exactly the same (ending in -t) whether it is a normal sentence or a täytyy (must) sentence.
Why is the subject Hänen (genitive) instead of Hän?
This is because of the verb täytyy (must). In Finnish, verbs that express necessity require the person who "must" do something to be in the genitive case. So the basic word hän (he/she) becomes hänen.
If the object ämpärit is plural, why is the verb täytyy in the singular?
The verb täytyy is a special necessive verb. It never agrees with the subject or the object. It is permanently frozen in this third-person singular form, no matter who must do the action or how many things are involved.