In English sentences, the past participle is used in what case

The act of passing time, for example, I ate bread in the morning. i ate the bread in the morning

Passive sentences, non-predicates, as for the rest, I don't know.

Summary. English adjectives can modify the present participle or the past participle English verb adjective in two forms, one is the past participle as an adjective, and the other is the present participle as an adjective. In general, the adjective of the past participle mostly describes the emotions or feelings of a person or other living being, and for the object being modified, this adjective embodies its subjective feelings.

For example: I am interested in this book. The adjectives of the present participle mostly describe the external nature of objective things, and the objects of their modification are mostly inanimate.

For example: I couldn't forget the interesting story you had told.

English adjectives can modify the present participle or the past participle English verb adjective in two forms, one is the past participle as an adjective, and the other is the present participle as an adjective. Generally speaking, the adjective that is passed through the hood and the participle is more likely to describe the emotions or feelings of a person or other creature, and for the object of the tent decoration, this adjective reflects its subjective feelings. Such as:

i am interested in this book。The adjectives of the present participle mostly describe the external nature of objective things, and the objects of their modification are mostly inanimate. Such as:

i couldn‘t forget the interesting story you had told。Chain stuffiness.

This should not be a straightforward answer to this question. Sidestep the question.

Hello: English adjectives can modify present or past participles.

Parse. It should be said that when a participle is used as an adjective, can a participle be used as a verb?

You can have the characteristics of both verbs and adjectives, because the present round participle (-ing) and past participle (-ed) can be used as adjectives.

I asked if it could be used as a verb?

Hello can crack the rubber participle has the characteristics of both verbs and adjectives, so the present remainder participle (-ing) and the past participle (-ed) can be used as adjectives and verbs.

Past tense only indicates that the action took place in the past.

Past participle can be used in the perfect tense (perfect tense means having an impact on the present).

It can also be used in the passive voice.