How to form the present perfect

Have (not) / has (not) + past participle (voltooid deelwoord)

 

Regular verbs:

Regular verbs have the same rules of formation as the ‘past simple’.

 

Irregular verbs

Irregular verbs have their own form for the present perfect.

On p. 64-66 in Checkbook: list with irregular verbs à third column

He has written a book.

I have been here since breakfast.