I can give you several sentences.
The fog was enveloping the countryside as it thickened.
Islam's all-enveloping hijab is hip in Indonesia.
It would be used as a verb, because it describes the action of the cloud of dust.
The mythical beast seemed to slightly smile as it receded into the enveloping mist.
Fascia
Fasciectomy.
A camper enveloping silo-like enclosure.
A camper enveloping silo-like enclosure.
Each of a pair of serous membranes lining the thorax and enveloping the lungs
i do not know how to use embalming in a sentence. (there is the sentence)
So- you are asking when to use 'when' in a sentence. When you are asking how to use when in a question, you are already using when in a sentence, because a question actually is a sentence. I like to use when in a sentence whenever I like.
How do use evidenced in a sentence
can i use polymer in a sentence