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Conjugating the Weak Verb
Using the Verb
Strong and Irregular Verbs
Inseperable and Seperable Verbs
Modal Auxiliaries
The Subjunctive and Imperative
Auxiliary Verbs

Haben | Sein | Werden | Sein as Intransitive Auxiliary | Werden as Passive Auxiliary

Auxiliary verbs are those which assist another verb, but may also function on their own. As you have seen earlier haben and werden are used as auxiliary verbs in many forms. Here we will go more in depth with these verbs and see how they are used by themselves in their many tenses.
haben - to have
Present: Future:
ich habe I have ich werde haben I shall have
du hast you have du wirst haben you will have
er/sie/es hat he/she/it has er/sie/es wird haben he/she/it will have
wir haben we have wir werden haben we shall have
ihr habt you have ihr werdet haben you will have
sie haben they have sie werden haben they will have
Sie haben you have Sie werden haben you will have

Simple: Perfect:
ich hatte I had ich habe gehabt I have had
du hattest you had du hast gehabt you have had
er/sie/es hatte he/she/it had er/sie/es hat gehabt he/she/it has had
wir hatten we had wir haben gehabt we have had
ihr hattet you had ihr habt gehabt you have had
sie hatten they had sie haben gehabt they have had
Sie hatten you had Sie haben gehabt you have had

Pluperfect: Conditional:
ich hatte gehabt I had had ich würde haben I should have
du hattest gehabt you had had du würdest haben you would have
er/sie/es hatte gehabt he/she/it had had er/sie/es würde haben he/she/it would have
wir hatten gehabt we had had wir würden haben we would have
ihr hattet gehabt you had had ihr würdet haben you would have
sie hatten gehabt they had had sie würden haben they would have
Sie hatten gehabt you had had Sie würden haben you would have

Except for hast and hat, haben really is a weak verb.
sein - to be
Present: Future:
ich bin I am ich werde sein I shall be
du bist you are du wirst sein you will be
er/sie/es ist he/she/it is er/sie/es wird sein he/she/it will be
wir sind we are wir werden sein we shall be
ihr seid you are ihr werdet sein you will be
sie sind they are sie werden sein they will be
Sie sind you are Sie werden sein you will be

Simple: Perfect:
ich war I was ich bin gewesen I have been
du warst you were du bist gewesen you have been
er/sie/es war he/she/it was er/sie/es ist gewesen he/she/it has been
wir waren we were wir sind gewesen we have been
ihr wart you were ihr seid gewesen you have been
sie waren they were sie sind gewesen they have been
Sie waren you were Sie sind gewesen you have been

Pluperfect: Conditional:
ich war gewesen I had been ich würde sein I should be
du warst gewesen you had been du würdest sein you would be
er/sie/es war gewesen he/she/it had been er/sie/es würde sein he/she/it would be
wir waren gewesen we had been wir würden sein we would be
ihr wart gewesen you had been ihr würdet sein you would be
sie waren gewesen they had been sie würden sein they would be
Sie waren gewesen you had been Sie würden sein you would be

Sein ist probably one of the most irregular verbs you will ever come across, yet it is probably the most important.
werden - to become
Present: Future:
ich werde I become ich werde werden I shall become
du wirst you become du wirst werden you will become
er/sie/es wird he/she/it becomes er/sie/es wird werden he/she/it will become
wir werden we become wir werden werden we shall become
ihr werdet you become ihr werdet werden you will become
sie werden they become sie werden werden they will become
Sie werden you become Sie werden werden you will become

Simple: Perfect:
ich wurde I became ich bin geworden I have become
du wurdest you became du bist geworden you have become
er/sie/es wurde he/she/it became er/sie/es ist geworden he/she/it has become
wir wurden we became wir sind geworden we have become
ihr wurdet you became ihr seid geworden you have become
sie wurden they became sie sind geworden they have become
Sie wurden you became Sie sind geworden you have become

Pluperfect: Conditional:
ich war geworden I had become ich würde werden I should become
du warst geworden you had become du würdest werden you would become
er/sie/es war geworden he/she/it had become er/sie/es würde werden he/she/it would become
wir sind geworden we had become wir würden werden we would become
ihr seid geworden you had become ihr würdet werden you would become
sie sind geworden they had become sie würden werden they would become
Sie sind geworden you had become Sie würden werden you would become
Like sein, werden also uses sein as an auxiliary verb to form the compound past tense. This happens with a small handful of intransitive verbs which mainly have to do with a change of place or state:
klettern - to climb
einschlafen - to fall asleep
Although it is only when they are intransitive that it is conjugated with sein. When they are transitive they are conjugated with haben.
If you use werden as an auxiliary to form the passive voice the past participle becomes worden instead of geworden:

Present: Ich werde geärgert. - I am being annoyed.
Future: Ich werde geärgert werden. - I shall be annoyed.
Simple: Ich wurde geärgert. - I was annoyed.
Perfect: Ich bin geärgert worden. - I have been annoyed.
Pluperfect: Ich war geärgert worden. - I had been annoyed.
Conditional: Ich würde geärgert werden. - I should be annoyed.
Lesson Fourteen - Strong and Irregular Verbs -->