Phrasal Verb Fun

call somebody out
When you call your friend out on something, you are calling
out
to the
world on to what he or she said. You are challenging your friend to
back
up
his words. You want evidence.
Separable two-word verb
Be careful.
call round
My daughter is very nervous and hasn't eaten anything all day, because
her new boyfriend is calling round to our house this evening to introduce
himself.
ROUND in many verbs means 'approximately here' or 'here, but not
urgently' Other expressions like
come round
,
drop round
,
call by
,
come
by
and
drop by
have the same meaning.
Two-word verb without an object
No problem.
call to
If you call to Vladimir across the street, you are just shouting a friendly
hello.

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Notice that on the phone we say this differently. We call Matilda on the
phone.
Inseparable two-word verb
No problem.
call up
In the old days,
up
was the direction of authority. When you were
CALLED UP, you were called to defend the King against his enemies. You
joined the army. You had to.
Sign up
and
join up
also mean that you go in the army, but suggest that
you are a volunteer.
Two-word verb without an object
Usually passive. No problem.