Nominative Objects: Imperatives and Passives

In an ordinary sentence the singular total object takes the genitive-shaped -n: ostan auton. But in three specific clause types that -n vanishes and the object stands bare, in its dictionary nominative: osta auto!, auto ostetaan, minun täytyy ostaa auto. This is not three separate rules to memorise — it is one rule with one cause. The three frames share a single structural fact, and once you see it, the nominative object stops looking like an exception and starts looking inevitable.

The three frames

Here are the environments side by side. Watch the object: auton in the plain clause, bare auto everywhere else.

The same object, ovi, is bare in all three — not *sulje oven, not *oven suljettiin, not *täytyy sulkea oven. Compare the plain clause suljin oven ("I closed the door"), where the real subject minä is present and the object is oven with its -n.

The shared cause: no nominative subject

Why do exactly these three frames strip the -n? Because none of them has an ordinary nominative subject, and the singular object rises to fill the empty nominative slot.

• The imperative commands an unnamed "you" — there is no spoken subject at all: (sinä) osta auto!
• The passive deliberately hides the doer — Finnish has no "by whom": auto ostetaan.
• The necessive puts the person into the genitive, not the nominative: minun täytyy..., sinun pitää..., meidän on pakko....

In a normal clause the nominative is taken by the subject, so the total object has to borrow the genitive -n instead. Remove the nominative subject and the nominative is free — so the object claims it. That is the entire mechanism.

It is the -n that drops — nothing else

The nominative object is a singular phenomenon, because -n is the only ending being shed. Everything that was already nominative-shaped stays exactly as it is. Two consequences follow, and both trip up learners who over-apply the rule.

Plural objects keep -t. The plural total object is nominative -t to begin with, so there is no -n to lose. It looks identical in a plain clause and in these three frames.

Valot, liput, astiat are all -t — the same as in ostin liput ("I bought the tickets"). The nominative-object rule never touches them.

Personal pronouns keep -t. Pronouns carry a true accusative ending, -t (minut, sinut, hänet, meidät, teidät, heidät), and it is loyal: it stays put even in the very frames that strip nouns to the nominative. There is no -n on a pronoun object to lose.

Vie minut is an imperative, meidät kutsuttiin a passive, täytyy viedä hänet a necessive — the three nominative-forcing frames — and yet the pronoun stays minut, meidät, hänet. Never *vie minä, never *hän kutsuttiin.

A note on the necessive subject

The necessive "subject" — minun, sinun, meidän — is a genitive, not a nominative, and that genitive is exactly why the object can take the nominative. Do not mistake it for the object: in minun täytyy ostaa auto, minun is the person who must act and auto is the thing bought. The full syntax of these person-in-the-genitive sentences — including which verbs count as necessive and how negation works — belongs to the necessive sentence page. Here, only the object matters, and the object is nominative.

Common Mistakes

Key Takeaways

• After an imperative, a passive, or a necessive verb, the singular total object drops its -n and stands in the bare nominative (osta auto, auto ostetaan, minun täytyy ostaa auto).
• The shared cause is that none of these frames has a nominative subject, so the object claims the vacant nominative.
• Only the -n is shed: plural objects stay -t (sammuta valot) and personal pronouns keep their accusative -t (vie minut, hänet) in all three frames.
• The necessive person is a genitive (minun täytyy), never the object — don't confuse the two.