Flashcards in Helfen, Lassen & Senses Deck (2)
Helfen, lassen and verbs indicating the senses (such as sehen and hören) function like modal auxiliaries. Like the modals, these verbs require a double infinitive construction when forming the present perfect tense if there is a dependent infinitive involved. After verbs of this type, English often uses a present participle, but German uses a dependent infinitive.
Ich sehe ihn kommen. I see him coming.
Ich habe ihn kommen hören. I heard him coming.