Strike through the prepositional phrases in the following sentences.
1.Without thinking, the man spent his entire p[aycheck in one night.
2. Most of Sara's creative ideas occur in the evening.

Thanks, Ann

"A preposition shows position, placed before a noun." That's what I was taught long ago, when grammar was part of a school's syllabus.

In each of those sentences "in" is a preposition. Therefore I suppose "in one night" and "in the evening" are the "prepositional phrases" you are meant to identify.

As for why and how you are to "strike through" them, that's your call, Ann.