Breakdown of Het mengsel is langzaam ingekookt.
zijn
to be
langzaam
slow
het mengsel
the mixture
inkoken
to boil down
Questions & Answers about Het mengsel is langzaam ingekookt.
Why does this sentence use is instead of heeft for 'has boiled down'?
Because the verb inkoken (to boil down) describes a change of state happening to the subject (het mengsel), making it intransitive here. When a verb shows a subject changing state without a direct object, it uses zijn in the perfect tense. If someone else were doing the action to the mixture, it would take a direct object and use hebben instead (for example: 'De kok heeft het mengsel ingekookt').
How is the past participle ingekookt formed?
It comes from the separable verb inkoken. To form the past participle of a separable verb, the ge- prefix is placed between the separable part (in) and the verb stem: in + ge + kookt.
Why does ingekookt end with a -t instead of a -d?
This follows the 't kofschip rule, which you may remember from earlier levels. The stem of the base verb koken is kook. Because the final letter k is a voiceless consonant (it is in the word 't kofschip), the past participle gets a -t instead of a -d.
In English, 'is boiled down' describes a current state, while 'has boiled down' describes the completed action. How does Dutch handle this difference?