Past participles as adverbials can express time, concession, conditions, reasons, ways, etc. , equivalent to an adverbial clause. Its logical subject is the subject of the main clause, which forms a logical verb-object relationship with the subject of the main clause.

1, as adverbial of time

Equivalent to adverbial clause of time. Conjunction when, while, till, etc. Can be added before the past participle to make its time meaning more clear.

Seen from the top of the mountain, the town looks more beautiful.

Seen from the top of the hill, the town looks more beautiful.

Seen from the top of the mountain, this town looks more beautiful.

Seen from the top of the mountain, this town looks more beautiful.

When asked about his teaching work, he said that he found the job interesting and rewarding.

When asked about his views on teaching, he said that he found it interesting and meaningful.

2, as an adverbial of reason

Equivalent to adverbial clause of reason.

The teacher was very satisfied with what I did and praised me in class.

Because my teacher was satisfied with what I did, he praised me in class.

Being satisfied with what I did, the teacher praised me in class.

3, as a conditional adverbial

Equivalent to a conditional adverbial clause. You can add conjunctions if, less, etc. Conditional adverbial clause.

Growing in fertile soil, these seeds can grow quickly.

If planted in fertile soil, these seeds will grow quickly. If planted in fertile soil, these seeds will grow quickly.