Phrasal Verb Fun

drink
(drink, drank, drunk)
What we do to beer, tea, Coca-cola, and so on.
drink up
'Time, ladies and gentlemen, please! Drink up now! Haven't you got
homes to go to?'

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You will hear this at closing time in a British pub.
Here,
up
means to finish. So drink up means to finish your drink.
Separable
two-word verb
but usually without an object. Careful.
drop
(drop, dropped, dropped)
To drop something is to allow it to fall.
drop back
This means exactly the same as
fall back
. If you are in front in a race, but
then someone else flies past you, then you have dropped
back
, you have
fallen back.
Two-word verb without an object
No problem.
drop by
I was talking to Mrs Kitchener on the phone, and she said, 'No problem.
I'll drop by in a few minutes and give you the potatoes.'
In space,
by
has the general idea of 'next to' or 'close to'. To DROP BY
means to drop (from Heaven?) by (your house or your office)
call by
,
come by
,
call round
,
come round
, and
drop round
all have the
same meaning.
Two-word verb without an object
No problem.