The German Verb System: Overview

Before you memorize a single conjugation table, it helps to see the German verb system whole. Almost everything that feels alien about German verbs comes from three or four big structural ideas. Learn those ideas first, and the individual rules stop looking like a pile of exceptions and start looking like a system. This page is your map.

The infinitive: where every verb starts

A German verb's dictionary form is its infinitive, and the giveaway is the ending -en: machen (to make/do), gehen (to go), spielen (to play), trinken (to drink). A small group ends in just -n (sammeln — to collect, wandern — to hike, tun — to do). Drop the ending and you have the stem (mach-, geh-, spiel-), the part you attach personal endings to.

Notice that the infinitive is written in lowercase, like every other verb. German capitalizes nouns, not verbs. But the moment you turn a verb into a noun — a nominalized infinitive — it gets a capital letter and an article:

So schwimmen (to swim) is a verb, but das Schwimmen (swimming, the act of swimming) is a noun. The capital letter is the whole difference.

Verbs agree with their subject

Unlike English, where only the third-person singular gets a special ending (I work, she works), every German subject pulls a different ending out of the verb. Ich mache, du machst, er macht, wir machen — five distinct endings across the persons. This is conjugation, and the present-tense endings are the first thing worth drilling. We cover them in detail on the present-tense endings page. For now, just register that the ending always tells you who is doing the action.

Six tenses, four moods

German organizes time into six tenses. Three are simple (one word) and three are compound (built from an auxiliary verb plus a participle or infinitive):

Layered on top of tense are the moods, which mark how the speaker relates to the statement: the indicative (plain statements of fact), the imperative (commands), Konjunktiv II (hypotheticals, wishes, politeness — ich hätte gern), and Konjunktiv I (reported speech in formal writing — er sagte, er sei krank). You will meet these later; the point here is that they are part of the same machine.

The three organizing distinctions

Three cross-cutting splits run through the whole verb system. Every German verb sits somewhere on each of these axes, and almost every later chapter is really about one of them.

1. Weak vs strong vs mixed. This is about how a verb forms its past tense and participle. Weak (regular) verbs just add endings: machen, machte, gemacht. Strong verbs change their stem vowel: singen, sang, gesungen. Mixed verbs do both: bringen, brachte, gebracht. The catch — and it mirrors English exactly — is that the most common verbs are the strong, irregular ones. See weak, strong, and mixed verbs.

2. Separable vs inseparable prefixes. Many verbs carry a prefix that radically changes the meaning. Some prefixes detach in a main clause and fly to the end (aufstehen → Ich stehe um sieben auf — I get up at seven). Others are welded on permanently (verstehen → Ich verstehe das — I understand that). See separable and inseparable prefix verbs.

3. The haben/sein split. To build the Perfekt, most verbs take haben as their auxiliary, but verbs of motion and change of state take sein: Ich habe gegessen (I have eaten) but Ich bin gegangen (I have gone). The three pillar verbs sein, haben, and werden do most of the auxiliary heavy lifting — see sein, haben, werden.

The Satzklammer: the heart of it all

If you remember one thing from this page, remember this. German verbs split a sentence into two pieces, holding it together like a bracket — the Satzklammer (sentence bracket).

In a normal main clause, the finite verb (the conjugated one that agrees with the subject) lands in second position. But any other verbal piece — a past participle, an infinitive, or a separable prefix — is flung to the very end of the clause. Everything else sits inside the bracket.

Look at where habe and gekauft land. Habe (the finite verb) is in position two; gekauft (the participle) is at the end; gestern ein Buch sits between them, clamped inside the bracket:

Ich habe gestern ein Buch gekauft.      ⌐————————— bracket —————————¬

This is the single biggest structural difference from English, where the auxiliary and the participle stay glued together: I *have bought a book yesterday*. German pries them apart and stretches them across the whole clause. The same bracket reappears everywhere:

In the first, werden … fahren form the bracket; in the second, the separable prefix auf is the closing element; in the third, the modal möchte opens and the infinitive sehen closes. Once you see the bracket, German word order stops being mysterious. We devote a full page to it — see the Satzklammer.

Common Mistakes

The errors below are the ones English speakers make in the first months, and almost all of them trace back to the structural points above.

Key Takeaways

• The infinitive ends in -en (or -n) and is lowercase; capitalize it only when it becomes a noun (das Lesen).
• German verbs agree with their subject through distinct personal endings, and the subject is never dropped.
• There are six tenses (three simple, three compound) and four moods; spoken German favors the Perfekt for the past.
• Three distinctions organize the whole system: weak/strong/mixed, separable/inseparable, and the haben/sein auxiliary split.
• The Satzklammer is the structural core: the finite verb sits second, and participles, infinitives, and separable prefixes go to the very end.