The sentence that contains a verbal phrase acting as a modifier is: Giving a presentation in front of my class, I suddenly developed sever stage fright.
Modifiers are optional elements in a phrase structure that even when removed, it does not affect the whole grammar of the sentence.
I’m to the park today, and the park has swings.
The first condition of equilibrium states that for a body to be in equilibrium, the vector sum of all the forces acting on that body must be zero<span>. Hope that helps you.</span>