How many prepositional phrases are in this sentence After you finished lunch went into the little shops across street?

Let's break down the sentence to find the prepositional phrases:

* After you finished lunch - This is a prepositional phrase. "After" is the preposition, and "you finished lunch" is the object of the preposition.

* went into the little shops - This is another prepositional phrase. "Into" is the preposition, and "the little shops" is the object of the preposition.

* across the street - This is a prepositional phrase. "Across" is the preposition, and "the street" is the object of the preposition.

Therefore, there are three prepositional phrases in the sentence.