Alternate passive constructions (man + verb, sein + zu + infinitive)

What are alternate passive constructions in German?

German has a clear, regular passive built with werden + past participle (Das Haus wird gebaut). But German also often avoids that full passive by using two alternative constructions that express a similar idea without werden:

- man + verb — the indefinite-person construction (English: "one/people/they/you" do something)
- sein + zu + Infinitiv — a construction meaning "is to be done / must be done / is to be" (formal/impersonal)

Both are very common and useful. They let you talk about actions without naming a specific agent. Below you'll find when and why to use each, how to form them, many natural examples, and common learner mistakes.

When do I use man + verb?

Meaning and use
- "Man" is an indefinite pronoun meaning "one/people/you/they". Use it to make general statements, describe common actions, give simple rules or habits, or speak about things people do in general.
- This construction is active (it uses a verb in the 3rd-person singular) but the subject is unspecified.

Typical contexts and examples
- General facts or habits:
- "In Deutschland trinkt man viel Kaffee." — "People/One drinks a lot of coffee in Germany."
- "Man lernt viel, wenn man spricht." — "You learn a lot when you speak."

- Rules, advice and warnings:
- "Man sollte immer die Anleitung lesen." — "One should always read the instructions."
- "Wenn man zu schnell fährt, riskiert man eine Strafe." — "If you drive too fast, you risk a fine."

- News or general observations where agent is not important:
- "Man hat das neue Museum eröffnet." — "They/People have opened the new museum."

Form and tense
- "man" takes 3rd-person singular verb forms: "man ist", "man hat", "man kann" (not "man sind").
- You can use present, past and perfect:
- Present: "Man repariert das Auto." — "People repair the car." (or: "The car is being repaired.")
- Simple past: "Man reparierte das Auto." — "People repaired the car."
- Perfect: "Man hat das Auto repariert." — "Someone/people have repaired the car."

Notes on nuance and register
- "Man" emphasizes the actor (unspecified people) doing something. The regular passive (werden + Partizip) emphasizes the action or the affected thing.
- "Man kennt die Regeln." (People know the rules.) vs "Die Regeln sind bekannt." (The rules are known.)
- "Man" is neutral and common in spoken and written German. For more colloquial speech, Germans also use "die Leute" or "wir" (in some contexts) instead of "man".

When do I use sein + zu + Infinitiv?

Meaning and use
- "sein + zu + Infinitiv" expresses that something is to be done, i.e. an obligation, requirement, plan, or task. It is impersonal and often used in formal notices, instructions, official language, or lists.
- English equivalents: "is to be done", "must be done", "is to be" (formal). In everyday speech you usually say "muss" or "soll" instead.

How it looks grammatically
- Structure: subject + sein (conjugated) + zu + infinitive (verb at the end of the clause)
- Example: "Der Bericht ist bis Montag zu liefern." — "The report is to be delivered by Monday."
- For separable-prefix verbs put zu between prefix and verb: "aufzuräumen", "einzureichen". Examples:
- "Das Zimmer ist aufzuräumen." — "The room is to be tidied." (formal)
- "Die Anmeldung ist ausgefüllt und einzureichen." — "The registration must be completed and submitted."

Tense and negation
- Use the correct tense of "sein" to place the obligation in time:
- Present: "Die Aufgaben sind zu erledigen." — "The tasks are to be done."
- Past (less common): "Das war gestern zu tun." — "That was to be done yesterday."
- Negation: "nicht" usually goes before "zu": "Der Bereich ist nicht zu betreten." — "The area is not to be entered."

Register and alternatives
- "sein + zu + Infinitiv" is formal and common in written instructions, notices, official lists and technical language. In spoken German people more often say "muss" or a modal passive:
- Formal: "Das Formular ist zu unterschreiben." — Spoken: "Das Formular muss unterschrieben werden."

How do these constructions compare with the standard passive (werden + Participle)?

Short summary of differences
- man + verb: Active voice with an indefinite agent (people do something).
- sein + zu + Infinitiv: Impersonal, modal-like expression of obligation or arrangement (something should/must be done).
- werden + Participle: The standard passive that focuses on the action done to the subject (often no agent is mentioned).

Parallel examples (to compare nuance)
- Active (man): "Man repariert das Auto." — "People repair the car." (focus on people doing it)
- Passive (werden): "Das Auto wird repariert." — "The car is being repaired." (focus on the action / the car)
- Sein + zu + Infinitiv: "Das Auto ist zu reparieren." — "The car is to be repaired." (official/instructional: it must be repaired)

- Rule/obligation example:
- man: "Man darf hier nicht rauchen." — "People are not allowed to smoke here." (general rule)
- werden passive: "Hier darf nicht geraucht werden." — "Smoking is not allowed here." (passive modal)
- sein + zu: (less common) "Hier ist nicht zu rauchen." — rare/formal; usually use the passive modal above or the short sign "Rauchen verboten."

Impersonal verbs and intransitives
- For intransitive verbs (no direct object) German often uses either "man + verb" or the impersonal passive with "es wird + Partizip":
- "Man tanzt viel auf dem Fest." — "People dance a lot at the party."
- "Es wird viel getanzt." — "There is a lot of dancing." (impersonal passive, focus on the activity)

How to form and transform these constructions (practical guide)

Common mistakes and how to avoid them

- Wrong verb agreement with "man": "*Man sind" is wrong. Always use 3rd-person singular: "Man ist." Correct: "Man ist hier." not "Man sind hier."

- Using "man" as the agent in a passive with "von": "*Der Brief wurde von man geschickt." Wrong. If you want an indefinite agent in a passive, use "von jemandem" or keep the active with "man":
- Correct active: "Man hat den Brief geschickt." — "Someone sent the letter."
- Correct passive with indefinite agent: "Der Brief wurde (von jemandem) geschickt." — "The letter was sent." or simply "Der Brief wurde geschickt."

- Mixing "zu" and "werden": "*Das ist zu werden gemacht" is wrong. Use either:
- "Das ist zu machen." (The thing is to be done.) or
- "Das muss gemacht werden." (It must be done.)

- Wrong placement of "zu" with separable verbs:
- Incorrect: "*Die Aufgabe ist zu aufräumen."
- Correct: "Die Aufgabe ist aufzuräumen." (or: "Die Aufgabe muss aufgeräumt werden.")

- Confusing "sein + Partizip" (result state) with "sein + zu + Infinitiv" (necessity):
- "Die Tür ist geöffnet." — "The door is open." (state/result)
- "Die Tür ist zu öffnen." — "The door is to be opened." or "The door must be opened." (obligation)

- Translating English "to be" + adjective/verb literally: English "The book is easy to read" = "Das Buch ist leicht zu lesen." But "Das Buch ist zu lesen" would mean "The book is to be read" (obligation). Watch out: "zu" + Infinitiv can mean obligation, not always purpose or possibility.

Lots of examples (with translations) to build intuition

General statements (man) vs passive (werden)
- "Man spricht hier Englisch." — "People speak English here."
- "Hier wird Englisch gesprochen." — "English is spoken here."

Instruction / obligation: sein + zu + Infinitiv vs modal passive
- "Die Formulare sind bis Freitag einzureichen." — "The forms are to be submitted by Friday." (formal)
- Same idea, more common in speech: "Die Formulare müssen bis Freitag eingereicht werden." — "The forms must be submitted by Friday."

Quick reference: when to pick which form

- Use man + verb when you want a general, active statement about what people do.
- Use werden + Partizip (standard passive) when you want to focus on the action happening to the subject or on the result.
- Use sein + zu + Infinitiv when you want to state an obligation, instruction, or something that is planned or must be done (formal tone).

Glossary (simple definitions)

- man: indefinite pronoun meaning "one/people/you/they"; takes 3rd-person singular verbs.
- passive (werden + Partizip): the standard passive voice that focuses on the action affecting the subject.
- impersonal passive: a passive used with intransitive verbs where a dummy "es" or no agent is used ("Es wird getanzt").
- sein + zu + Infinitiv: a formal construction meaning "is to be done / must be done"; used for obligations and instructions.
- separable-prefix verb: a verb that has a prefix that separates in many tenses (e.g. aufräumen). With "zu" put "zu" between the prefix and the verb stem ("aufzuräumen").

Final tips

- If you want to emphasize who does something, use an active form (use a subject: someone / man / die Leute / ein Mitarbeiter).
- If you want to emphasize the action or the object affected, use the standard passive (werden + Partizip).
- If you are writing notices, instructions, or formal lists, "sein + zu + Infinitiv" is compact and appropriate.
- When translating from English, be careful: English uses "to be" + adjective or infinitive in many ways that German treats differently (obligation vs possibility). Check the intended meaning (obligation, general habit, or result) before choosing the German structure.

If you want, I can give more example pairs (man ⇄ werden ⇄ sein + zu) using verbs you find difficult.