Infinitive or Prepositional Phrase?

Tina stopped to buy some milk.

• infinitive

• prepositional phrase

Venus is the planet closest to Earth.

• infinitive

• prepositional phrase

Are you planning to ride your bike today?

• infinitive

• prepositional phrase

David plans to sleep until noon.

• infinitive

• prepositional phrase

Kristy donates to that charity.

• infinitive

• prepositional phrase

The Hernandez family came to the United States last year.

• infinitive

• prepositional phrase

The students agreed to form a committee.

• infinitive

• prepositional phrase

Matthew wanted to sign up for camp.

• infinitive

• prepositional phrase

The tourists went to Glacier National Park.

• infinitive

• prepositional phrase

A jaguar is able to run 70 mph.

• infinitive

• prepositional phrase