Clear Adverbial Phrases

A prepositional phrase is a group of words that consists of a preposition, its object and any modifiers that describe the object. You can always tell if a phrase is prepositional by the prepositions to, of, about, at, before, after, by, behind, during, for, from, in, over, under and with. If a prepositional phrase functions as an adverb, it is called an adverbial phrase and answers the questions How?, When? or Where?

In technical documentation, always put an adverbial phrase that starts with the preposition to, before, after, during, from, in or under at the beginning of a sentence, and use a comma to separate the phrase from the independent clause. This will make your instructions easier to understand.

To learn more about prepositional phrases, see this Grammarly article.


  1. In the Users and Groups column, click Add. [where?]
  2. After you enable a virtual lab for an Orchestrator site, you will become able to use this lab for on-demand and scheduled plan testing for the site. [when?]