Verb conjugation is a method of changing verbs from their infinitive forms. The changes, usually done through endings and auxiliary words, express grammatical categories related to the action or state being described, such as person, number, tense, aspect and mode. Verbs are divided into a number of classes according to their form of conjugation and may be assigned model patterns to help to create the correct forms.
There are simple verb forms (e.g. ich mache, ich machte) and compound verb forms that use an auxiliary verb (e.g. ich habe gemacht, ich werde machen).
There are 6 tenses in German in total. Two of them are simple: the present simple (Präsens) and the past simple (Präteritum). The other four tenses are compound, i.e. they combine an auxiliary verb and the infinitive or the past participle form of the main verb carrying the meaning. The compound tenses include the future simple (Futur I), the present perfect (Perfekt), the past perfect (Plusquamperfekt) and the future perfect (Futur II).
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Present simple – Präsens
ich
filtere
du
filterst
er/sie/es
filtert
wir
filtern
ihr
filtert
sie/Sie
filtern
Past simple – Präteritum
ich
filterte
du
filtertest
er/sie/es
filterte
wir
filterten
ihr
filtertet
sie/Sie
filterten
Present perfect – Perfekt
ich
habe gefiltert
du
hast gefiltert
er/sie/es
hat gefiltert
wir
haben gefiltert
ihr
habt gefiltert
sie/Sie
haben gefiltert
Past perfect – Plusquamperfekt
ich
hatte gefiltert
du
hattest gefiltert
er/sie/es
hatte gefiltert
wir
hatten gefiltert
ihr
hattet gefiltert
sie/Sie
hatten gefiltert
Future simple – Futur I
ich
werde filtern
du
wirst filtern
er/sie/es
wird filtern
wir
werden filtern
ihr
werdet filtern
sie/Sie
werden filtern
Future perfect – Futur II
ich
werde gefiltert haben
du
wirst gefiltert haben
er/sie/es
wird gefiltert haben
wir
werden gefiltert haben
ihr
werdet gefiltert haben
sie/Sie
werden gefiltert haben
Subjunctive of verb of the regular verb [filtern]
The subjunctive (from the late Latin modus coniunctivus, translated as a form of sentence structure, derived from the Latin verb coniungere – to join).
The subjunctive is a special verb form that usually expresses that the action is conditional or hypothetical.
It expresses possible, probable, hypothetical, desired, dreaded or necessary actions (thus indicating the speaker’s attitude toward the action). It is a form used to express something imagined that may never happen. In particular, it marks the utterance as subjective, doubtful or uncertain.
In German, there is the subjunctive I and the subjunctive II.
The subjunctive I includes the present subjunctive (e.g. er sei, er habe), the future subjunctive and the perfect subjunctive.
The subjunctive I usually expresses someone else’s opinion, often unlikely from the speaker’s point of view (present indicative: Er sagt, dass niemand zu Hause ist. – He says that no one is at home. X present subjunctive: Er sagt, dass niemand zu Hause sei. – He says that (supposedly) no one is at home.).
The subjunctive II includes the past subjunctive (er wäre, er hätte) and the past perfect subjunctive.
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Subjunctive I: Present – Konjunktiv I
ich
filtere
du
filterst
er/sie/es
filtere
wir
filtern
ihr
filtert
sie/Sie
filtern
Subjunctive I: Present perfect – Konjunktiv I
ich
habe gefiltert
du
habest gefiltert
er/sie/es
habe gefiltert
wir
haben gefiltert
ihr
habet gefiltert
sie/Sie
haben gefiltert
Subjunctive I: Future simple – Konjunktiv I: Futur I
ich
werde filtern
du
werdest filtern
er/sie/es
werde filtern
wir
werden filtern
ihr
werdet filtern
sie/Sie
werden filtern
Subjunctive I: Future perfect - Konjuktiv I: Futur II
ich
werde gefiltert haben
du
werdest gefiltert haben
er/sie/es
werde gefiltert haben
wir
werden gefiltert haben
ihr
werdet gefiltert haben
sie/Sie
werden gefiltert haben
Subjunctive II: Past simple – Konjunktiv II: Präteritum
ich
filterte
du
filtertest
er/sie/es
filterte
wir
filterten
ihr
filtertet
sie/Sie
filterten
Subjunctive II: Past perfect – Konjunktiv II: Plusquamperfekt
ich
hätte gefiltert
du
hättest gefiltert
er/sie/es
hätte gefiltert
wir
hätten gefiltert
ihr
hättet gefiltert
sie/Sie
hätten gefiltert
Subjunctive II: Future simple – Konjunktiv II: Futur I
ich
würde filtern
du
würdest filtern
er/sie/es
würde filtern
wir
würden filtern
ihr
würdet filtern
sie/Sie
würden filtern
Subjunctive II: Future perfect – Konjunktiv II: Futur II
ich
würde gefiltert haben
du
würdest gefiltert haben
er/sie/es
würde gefiltert haben
wir
würden gefiltert haben
ihr
würdet gefiltert haben
sie/Sie
würden gefiltert haben
Imperativ verb ofof the regular verb [filtern]
The imperative (from the Latin imperativus) is a verb form that expresses a command, request or prohibition. In many cases, the use of the imperative can come across as rude and impolite. Therefore, a command is often expressed in a more polite way, using other grammatical means.
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Imperative – Imperativ
du
filtere
ihr
filtert
Participle forms of verb of the regular verb [filtern]
The participle form (from the Latin participare – ‘to take part’) is an indefinite form of a verb that can also be used in a number of ways:
to form compound verb tenses;
to form the passive voice;
as an adjective;
as an alternative to subordinate clauses (sentence condensers);
and others.
Participles can also be used as adjectives (participial adjectives), e.g. gekauft – gekauft(-e), verpasst – verpasst(-e), vergangen – vergangen(-e), as well as nouns (verbal nouns), e.g. griff – der Griff.