Originally posted by: Simius https://forum.duolingo.com/comment/25345792
The present participle
The present participle of a verb is a form that can be used as an adjective or an adverb. It tells you that the corresponding noun is performing a certain action at the moment (in the case of an adjective) or that the action is performed alongside the main verb of the sentence (in the case of an adverb). Some examples will make this more clear:
De lopende man - The walking man
De man gaat lopend naar huis - The man goes home walking (or: on foot)
In English, the present participle ends on -ing. This is a very common form, which is also used in the present continuous (I am walking), as a gerund (I like walking) and in various other constructions. In Dutch, however, the participle is far more rare and only used as an adjective or adverb.
The Dutch present participle is formed by adding -d or -de after the infinitive. When used as an adjective, it follows the standard rules for adding -e at the end:
De zingende man
Een zingende man
Het zingende meisje
Een zingend meisje
The past participle
The past participle of a verb is the form most commonly used in the present perfect. However, it can also have the function of an adjective:
I have cooked the potato.
The cooked potato
When used as an adjective, the past participle has a passive meaning. In other words, the corresponding noun ("potato") is the object of the verb ("to cook"), not the subject. This is a difference between the present and past participle (in addition to the difference in tense!).
In Dutch, the past participle can be used in exactly the same way:
Ik heb de aardappel gekookt.
De gekookte aardappel
If the verb is weak (i.e. regular, like "koken"), then the past participle ends on either -d or -t (see the Present Perfect grammar notes. In this case, it might get the extra ending -e as an adjective, like in the example above. This follows the standard rules of adjective declension, as before:
De gekookte aardappel
Een gekookte aardappel
Het gekookte ei
Een gekookt ei
However, if the verb is strong (i.e. irregular, such as "snijden"=to cut), then the past participle ends on -en. In this case, the adjective never gets the ending -e:
Ik heb de aardappel gesneden.
De gesneden aardappel
NOTE: The form "gesnedene" does not exist!