An English sentence can have many prepositional phrases or none.

Preposition	Example
prepostion + noun	at the park outside the box
prepostion + adverb	since yesterday until lately
prepostion + ~ing verb	when cooking before asking

Useful Prepositions

about	above	across	after
against	along	among	around
as	at	before	behind
below	beneath	beside	between
beyond	by	despite	down
during	except	for	from
in	inside	into	like
near	of	off	on
onto	opposite	out	outside
over	past	round	since
than	through	to	towards
under	underneath	unlike	until
up	upon	via	with
within	without