How can I know if a phrasal verb is separable or inseparable ?
I know that "look up" is separable but how can I really know with others?

Thanks in advance...

Question

How can I know if a phrasal verb is separable or inseparable ?
I know that "look up" is separable but how can I really know with others?

Thanks in advance...

Answer

Yep, Peachey is right. It can be frustrating and annoying for language learners but sadly there are no rules to phrasal verbs, you just have to learn each one and remember it!

Answer

You simply have to learn each one as you go. No tricks here.