I have to confess I'm a bit old-fashioned and resistant to change. Like a lot of students, I'm used to calling those special (and problematic) verbs consisting of a verb and a particle phrasal verbs. This is how they are referred to in dictionaries and in many grammar books and practice books dedicated to the subject.
A lot of course books and some websites, however, are now referring to multi-word or multi-part verbs instead.
One advantage of this new system is meant to be that we know that the category now known as prepositional verbs always take an object. On the other hand, I'm not sure how lumping Type 1 and Type 2 together makes anything easier. I also find it rather confusing that in this system the term, phrasal verb is still used but only refers to what I would call Type 1 and Type 2 phrasal verbs, and not to Types 3 or 4.
The new terms haven't had much effect on the Internet yet, where phrasal verb is overwhelmingly how all these verbs are referred to. Google Search brings up 2,870,000 hits for "phrasal verbs", 31,700 for "multi-word verbs", and 82,600 for "multi-part verbs". At Google Books the story is the same, with 82,700 hits for "phrasal verbs", only 2,770 for "multi-word verbs" and virtually nothing for "multi-part verbs".
But we can't turn the clock back; the term multi-word verbs, (or multi-part verbs) is apparently here to stay, so in this post I want to look at how the two systems currently being used in EFL/ESL teaching compare.