You’re at the bakery counter in Berlin, and you want to ask the baker a question. So you say: „Ich rufe Sie an“ — „I call you (up)“. But wait. That doesn’t look right. Where did the „an“ go? It was right there in the infinitive: anrufen — „to call“. Why has it jumped to the end of the sentence? This is one of German’s most unsettling grammar quirks for English speakers. Your instinct screams that prefixes should stay attached, like they do in English. We say „I call up my friend,“ not „I call my friend up.“ German disagrees. And once you understand why, you’ll find it actually makes a strange kind of sense.
First, let’s be clear about what we’re talking about. A separable verb — ein trennbares Verb — is a verb where the prefix can detach and move to the end of a sentence under certain conditions. Take aufstehen — „to get up“ or „to stand up“. The infinitive form keeps the prefix and verb together: aufstehen. But in a present-tense sentence, they split: Ich stehe um 7 Uhr auf. — „I get up at 7 o’clock.“ Not „Ich aufstehe um 7 Uhr“ or „Ich stehe aufstehen um 7 Uhr.“ The auf — „up“ — travels to the very end.
Similarly, anrufen — „to call“ or literally „to call at/on“: Ich rufe meinen Arzt an. — „I call my doctor.“ (Or more naturally in English: „I ring my doctor.“) Again, an — „at/on“ — has abandoned the verb and moved to the end. This happens because German treats these prefixes differently than English treats prefixes. In English, a prefix is grammatically bound to the verb stem — glued on, essentially. In German, many prefixes are more like separate words that happen to attach to the infinitive. When the verb conjugates (changes to match the subject), the prefix gets left behind, sitting at the end like a passenger who missed the train.
You might be wondering: which prefixes do this? The answer depends on stress and meaning. In German, a separable prefix is typically one that carries the word stress — the emphasis you hear when someone says the word aloud. Say aufstehen out loud: „AUF-shtay-en.“ The stress falls on auf. Compare this with verstehen — „to understand“ — where the stress falls on the steh part: „fer-SHTAY-en.“ The prefix ver- is unstressed, so it stays put. These are inseparable verbs — untrennbare Verben.
This is genuinely harder for English speakers to grasp because English doesn’t really have this distinction. We don’t have pairs like „AUF-shtay-en“ (separable, stressable) versus „fer-SHTAY-en“ (inseparable, unstressed). Our prefix system doesn’t work that way. But if you think of the stressed prefixes as almost like adverbs or particles that happen to be written together in the infinitive, it becomes less alien.
The prefix separates in the simple present and simple past tenses when the verb is conjugated — that is, when it’s actively describing an action. Present tense: Ich stehe auf. — „I get up.“ Du rufst an. — „You call.“ Sie steht früh auf. — „She gets up early.“ Past tense (Präteritum): Ich stand auf. — „I got up.“ Er rief an. — „He called.“ But crucially, the prefix does not separate in the infinitive form or in the past participle in certain contexts: Infinitive: Ich möchte aufstehen. — „I want to get up.“ (auf stays attached) Past participle: Ich bin aufgestanden. — „I have gotten up.“ (auf- stays attached)
This is the trickiest part: you need to remember that aufgestanden keeps the prefix, even though ich bin aufgestanden is a compound tense describing a completed action. The prefix reattaches in the participle.
At the registration office (das Bürgeramt), asking about paperwork: Rufen Sie morgen an. — „Call tomorrow.“ Or more formally: „Ring tomorrow.“ (The officer is using the imperative, the command form, which also triggers separation.) At your new job, talking about your schedule: Ich stehe jeden Morgen um 6 Uhr auf. — „I get up every morning at 6 o’clock.“ At the doctor’s office, filling out a form: Wann rufen Sie normalerweise an? — „When do you normally call?“ (In German, you call to make an appointment, whereas in English we might say „ring.“) At a café, catching up with a friend: Mein Mann ruft seine Mutter an, und ich räume auf. — „My husband calls his mother, and I tidy up.“ (räumen auf — „to tidy up“ — is another separable verb, from aufräumen.)
English has prefixes, but we don’t separate them. If I say „I am calling up my friend,“ the „up“ moves to the end, but grammatically, „call up“ is still a phrasal verb — a fixed pair. „Call“ and „up“ are both independent words in our sentence structure. German makes this even stranger because the prefix looks like it should be fused to the verb. You see aufstehen in the infinitive and think: „This is one word, one unit.“ But German grammar treats it like a compound where the particles can detach.
The honest truth: this takes time to internalize. You’ll likely make mistakes. You might say „Ich aufstehe um 7 Uhr“ at first, trying to keep the parts together. Or you might forget the prefix entirely. Both are normal stages. Learners typically need repeated exposure over weeks before separable verbs feel natural. The good news is that once you’ve heard native speakers use them enough times, your ear catches on faster than your conscious mind.
Beyond aufstehen and anrufen, you’ll encounter these frequently: ankommen — „to arrive“ → Ich komme um 14 Uhr an. — „I arrive at 2 p.m.“ einkaufen — „to shop“ → Ich kaufe Brot ein. — „I buy bread.“ (Literally: „I buy in bread.“) fernsehen — „to watch television“ → Wir sehen fern. — „We watch TV.“ mitnehmen — „to take along“ → Nimm deinen Ausweis mit! — „Take your ID along!“ Each follows the same pattern. The prefix moves to the end in the conjugated form, stays attached in the infinitive, and reattaches in the past participle.
Once you start noticing this pattern, you’ll see it everywhere. And gradually, what felt like German arbitrarily smashing words together will start to feel like a logical (if strange) system. That’s when you know the language is starting to settle into your brain.
Frequently Asked Questions
What are German separable verbs?
German separable verbs are verbs that have prefixes which can detach and move to the end of a sentence in certain tenses.
Why do prefixes in German verbs move?
Prefixes move in German because they carry the stress in the word, unlike in English where prefixes are usually attached to the verb.
When do German prefixes separate?
Prefixes separate in the simple present and simple past tenses when the verb is conjugated, but they stay attached in the infinitive form.
Can you give examples of separable verbs?
Examples include aufstehen (to get up), anrufen (to call), and einkaufen (to shop), all of which follow the same prefix separation pattern.
How can I practice separable verbs?
Practicing with native speakers, using language apps, and engaging with German media can help you internalize the patterns of separable verbs.
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