Prepositions are words that come before a noun or pronoun, and connects it with the rest of the sentence. A Preposition is often referred to as "connecting word". In most cases, prepositions tell time, placement, or movement.

Let's look at our sentence and identify the nouns and or pronouns:

The dog in the park is very friendly.

We know that the preposition has to come before one of those nouns, and it will most likely be a time, placement, or movement. "In" is the choice that falls in that category, and is the correct answer. "In" is telling the placement of the dog, connecting "the park" to the rest of the sentence.

Prepositions are words that come before a noun or pronoun, and connects it with the rest of the sentence. A Preposition is often referred to as "connecting word". In most cases, prepositions tell time, placement, or movement.

Let's look at our sentence and identify the nouns and or pronouns:

The balloons floated above the mailbox.

We know that the preposition has to come before one of those nouns, and it will most likely be a time, placement, or movement. "Above" is the choice that falls in that category, and is the correct answer. "Above" is telling the placement of the balloons over the mailbox, connecting "mailbox" to the rest of the sentence.

Prepositions are words that come before a noun or pronoun, and connects it with the rest of the sentence. A Preposition is often referred to as "connecting word". In most cases, prepositions tell time, placement, or movement.

Let's look at our sentence and identify the nouns and or pronouns:

David asked his dad to check for monsters under his bed.

We know that the preposition has to come before one of those nouns, and it will most likely be a time, placement, or movement. "Under" is the choice that falls in that category, and is the correct answer. "Under" is telling the placement of the monster, connecting the "bed" to the rest of the sentence.