Phrasal verbs are used in common language and the most popular ones are those
connected with everyday activities. The ones that I commonly use are associated with movement in and out of the house like getting up in the morning and going out during the day. When it comes to understanding the multiple uses of a verb whose definition changes based on the use of the preposition I find that the student is curious in the beginning but unless he can live that situation on a regular basis the new language is almost an imposition rather than a necessity.
Phrasal verbs are not necessary but they are currently used and if the new learner wants to feel accepted he had best learn at least some. There is a great sense of being excluded especially among the young set. When it comes to older people who cannot be bothered to know multiple meanings for the same verb, or cannot extenuate a literal meaning into a figurative one, one can get by with classical English structures
Still the student can learn from the ones he would like to use more often such as those involving the verb take or he can make it a point to learn a phrasal verb, which is associated to a particular topic like business or lifestyles. That might later encourage the speaker to later adopt expressions that muse those phrasal verbs.
