Fourth Grade English: Prepositions & Prepositional Phrases
Sentences do not consist solely of isolated actors and actions; they must show how people, objects, and events relate to one another in physical space, over periods of time, and in logical direction. A preposition is a connecting word that shows the relationship between a noun or pronoun and another word in the sentence. When combined with its object and modifiers, it forms a prepositional phrase. Mastering prepositions will help you add descriptive depth to your sentences and avoid common punctuation traps.
What Is a Preposition?
A preposition shows spatial location, direction, time, or logical connection between elements of a sentence.
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| THE PREPOSITION SPATIAL TEST |
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| "ANYWHERE A SQUIRREL CAN GO IN RELATION TO A TREE": |
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| UP the tree DOWN the tree |
| AROUND the tree INTO the tree |
| THROUGH the branches UNDER the tree |
| BESIDE the tree BEYOND the tree |
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| (Also works for TIME and ABSTRACT relationships: |
| DURING the storm, BEFORE dawn, WITHOUT fear, FOR justice) |
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Common Prepositions by Category
- Location and Position: above, behind, below, beneath, between, in, inside, near, on, under, upon.
- Direction and Movement: across, along, into, through, toward, to, past.
- Time: after, before, during, since, until, throughout.
- Association and Logical Relationship: with, without, of, for, about, by, except.
Anatomy of a Prepositional Phrase
A preposition never appears in isolation; it always introduces a prepositional phrase consisting of three essential components.
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| ANATOMY OF A PREPOSITIONAL PHRASE |
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| [ PREPOSITION ] + [ OPTIONAL MODIFIERS ] + [ OBJECT (Noun) ]|
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| under the ancient bridge |
| during the severe winter storm |
| across the rocky canyon |
| without any hesitation|
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The Object of the Preposition
The object of the preposition is the noun or pronoun that completes the phrase. It answers the question "Whom?" or "What?" after the preposition:
- "The submarine dived below [what?] the ice." ("Ice" is the object of the preposition "below").
- "Maya smiled at [whom?] him." ("Him" is the object of the preposition "at").
Pronouns as Objects of Prepositions
When a pronoun serves as the object of a preposition, it must always be an object pronoun (me, us, you, him, her, it, them), never a subject pronoun:
- "The secret remained between you and me." (Never "between you and I").
Adjectival vs. Adverbial Prepositional Phrases
Prepositional phrases perform two distinct grammatical jobs depending on what word they modify in the sentence.
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| TWO FUNCTIONS OF PREPOSITIONAL PHRASES |
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| Function | What it modifies | Question answered |
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| Adjectival Phrase | Noun or Pronoun | Which one? What kind? |
| | | |
| Adverbial Phrase | Verb, Adjective, | Where? When? How? |
| | or Adverb | To what extent? |
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Adjectival Prepositional Phrases
When a prepositional phrase describes a noun, it functions like an adjective:
- "The book [on the top shelf] belongs to Liam." (Which book? The one on the top shelf).
- "A girl [with red hair] won the spelling bee." (What kind of girl? One with red hair).
Adverbial Prepositional Phrases
When a prepositional phrase modifies a verb, adjective, or adverb, it functions like an adverb:
- "The hikers pitched their tent [beside the crystal-clear stream]." (Where did they pitch it? Beside the stream).
- "The bell rang [at three o'clock]." (When did it ring? At three o'clock).
Punctuating Introductory Prepositional Phrases
When an adverbial prepositional phrase appears at the very beginning of a sentence, it is called an introductory prepositional phrase.
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| INTRODUCTORY PREPOSITIONAL PHRASE RULE |
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| Short Phrase (1-3 words): Comma is optional, but often helpful. |
| "In the morning we hiked up the trail." |
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| Long Phrase (4+ words) or Multiple Phrases: COMMA REQUIRED! |
| "During the long and bitterly cold winter, the wolves hunted daily."|
| "At the top of the snow-covered mountain, the air felt thin." |
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Practice Exercises
Practice Questions
- Identify the prepositional phrase and its preposition in this sentence: "The red fox darted through the thick brush."
- Identify the object of the preposition in this phrase: "beneath the enormous oak tree."
- Determine whether the bracketed prepositional phrase is adjectival or adverbial: "The dog [with the wagging tail] barked happily."
- Determine whether the bracketed prepositional phrase is adjectival or adverbial: "We set our camp chairs [around the crackling fire]."
- Add a comma where needed for the introductory prepositional phrase: "After three hours of rigorous practice the dancers rested."
Answer Key and Explanations
- Prepositional phrase: "through the thick brush." Preposition: "through."
- The object of the preposition is "tree" (the main noun completing the phrase).
- Adjectival. The phrase modifies the noun "dog" (answers "Which dog?").
- Adverbial. The phrase modifies the verb "set" (answers "Where did we set them?").
- "After three hours of rigorous practice, the dancers rested." (Introductory prepositional phrase consisting of six words requires a comma).