Some grammarians classify transitive phrasal verbs into separable and inseparable. Just for instance:
Phrasal verbs that can be divided by objects are commonly referred to as being separable; those that cannot be divided are known as being inseparable.
Peter Herring, Complete English Grammar Rules
But what are the following:
- shut somebody up
- stand somebody up
- tell somebody/something apart
- talk somebody into something
A third category: separated? Isn't it more accurate to classify transitive phrasal verbs into fixed and unfixed, for example?
P.S. Please note that I know different kinds of multi-word verbs and how to identify them as explained in this thread: Difference Phrasal Verb, Prepositional Verb and Prepositional Phrasal Verb.
My question is to do with the accuracy of classifying transitive phrasal verbs into separable and inseparable.