Questions & Answers about Minun täytyy kyydittää sinut, koska sataa.
Why is the object sinut in the accusative case here instead of the nominative?
This is the main exception for necessity structures. Normally, after a necessity verb like täytyy, the total object takes the nominative case (e.g., Minun täytyy kyydittää koira). However, personal pronouns are an exception: they always keep their special -t accusative ending, making it sinut.
Why is it Minun täytyy instead of Minä täydyn?
Necessity verbs like täytyy require the subject to be in the genitive case (Minun). The verb is frozen in the third-person singular and never takes personal endings like -n.
Where does the verb kyydittää come from?
It is derived from the noun kyyti, which means 'a ride' or 'a lift'. By adding the transitive suffix -ttää, it becomes an active verb meaning 'to give someone a ride'.
Why is there no Finnish word for 'it' before sataa?
In English, we need a dummy subject to say 'it is raining'. Finnish simply uses the weather verb in the third-person singular on its own without any pronoun: sataa means both 'rains' and 'it is raining'.