I’m really looking forward to seeing you. (= I’m pleased and excited because I am going to see you)
Here are some more common three-word phrasal verbs which are well worth learning:
come up with = think of something: He’s good at coming up with ideas.
face up to = accept and try to deal with a problem: You need to face up to the fact that she’s not coming back.
get away with = not be criticized or punished: She shouldn’t be allowed to get away with such bad behaviour.
get round to = do something you had been intending to do: I finally got round to calling Joe yesterday.
make up for = do something to make a bad situation better: I gave her a nice present to make up for missing her party.
put up with = accept something even if you don’t like it: I won’t put up with this behaviour! (Note that although ‘tolerate’ means the same, it is only suitable for formal writing.)
The basic rule for separating three-word phrasal verbs is easy: don’t do it! The only common exceptions I can think of are these:
I put his bad mood down to the fact that he was hungry. (= decided that was the reason)
I tried to talk her out of going. (= persuade her not to go)
There is also a group of phrasal verbs which consist of a verb and an adverb when they are used as intransitive verbs (with no object), but which need a second particle when they are used before an object. Here are some common examples:
‘Is there any milk?’ ‘No, we’ve run out.’ (= there is no milk left)
We’ve run out of milk.
I have a lot of work to do, so I must get on. (= start or continue to do it)
I must get on with my work.
I eat too much chocolate. I really should cut down. (= eat less of it)
I really should cut down on chocolate.
This blog has given you a selection of useful three word phrasal verbs, but if you come up against others that you don’t know, just check the Cambridge online dictionary.