"everyday verbals" what role do both present and past participles serve in a sentence?

The correct answer is the role of adjective. Both non-finite verbs can perform the role of adjective in a sentence. The following examples show this role:

Present participle as adjective, which can be recognized from its "-ing" ending:

Look at the reading boy.

Past participle as adjective, which are formed by adding "-ed" to the verb:

Look at the washed car.

did you get the answer?

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