(Present) PRÄTERITUM
(Preterite/Past) PERFEKT
(Pres. Perfect)
DÜRFEN - be allowed/permitted, may
ich darfI may (am permitted) ich durfte
I was allowed ich habe gedurft *
I was allowed du darfst
you may du durftest
you were allowed du hast gedurft *
you were allowed er/sie darf
he/she may er/sie durfte
he/she was allowed er/sie hat gedurft *
he/she was allowed wir/Sie/sie dürfen
we/you/they may wir/Sie/sie durften
we/you/they were allowed wir/Sie/sie haben gedurft *
we/you/they were allowed ihr dürft
you (pl.) may ihr durftet
you (pl.) were allowed ihr habt gedurft *
you (pl.) were allowed * In the present perfect or past perfect tense with another verb, the double infinitive construction is used, as in the following examples: ihr habt sprechen dürfen = you (pl.) were allowed to speak
ich hatte sprechen dürfen = I had been allowed to speak
KÖNNEN - be able, can
ich kannI can, am able ich konnte
I could ich habe gekonnt *
I could du kannst
you can du konntest
you could du hast gekonnt *
you could er/sie kann
he/she can er/sie konnte
he/she could er/sie hat gekonnt *
he/she could wir/Sie/sie können
we/you/they can wir/Sie/sie konnten
we/you/they could wir/Sie/sie haben gekonnt *
we/you/they could ihr könnt
you (pl.) can ihr konntet
you (pl.) could ihr habt gekonnt *
you (pl.) could * In the present perfect or past perfect tense with another verb, the double infinitive construction is used, as in the following examples: wir haben schwimmen können = we were able to swim
ich hatte schwimmen können = I had been able to swim
MÖGEN - like, want, may
ich magI like ich mochte
I liked ich habe gemocht *
I liked du magst
you like du mochtest
you liked du hast gemocht *
you liked er/sie mag
he/she likes er/sie mochte
he/she liked er/sie hat gemocht *
he/she liked wir/Sie/sie mögen
we/you/they like wir/Sie/sie mochten
we/you/they liked wir/Sie/sie haben gemocht *
we/you/they liked ihr mögt
you (pl.) like ihr mochtet
you (pl.) could ihr habt gemocht *
you (pl.) could * In the present perfect or past perfect tense with another verb, the double infinitive construction is used, as in the following examples: wir haben schwimmen mögen = we liked to swim
ich hatte schwimmen mögen = I had liked to swim mögen is often used in its subjunctive (möchte) "would like" form:
Ich möchte lieber Kaffee (haben). = I would rather have coffee.
Wir möchten ins Kino. = We'd like to go to the movies.
From:https://www.dbfei.com/Article/deyu/201311/4886.html