Verbals can be defined as non-finite forms which can present specific configurations. Bearing this in mind, read the text below: First published in...

Verbals can be defined as non-finite forms which can present specific configurations. Bearing this in mind, read the text below:

First published in 1951, Shamanism soon became the standard work in the study of this mysterious and fascinating phenomenon.

To-infinitive

Past participle

Gerund

Bare infinitive

Present participle

The highlighted element in the text is an example of a: