Parts of Speech

Prepositional Phrases

πŸŽ’ Teaching an 8–18-year-old? Read the young-learner edition β†’

Here's a moment you'll probably recognise. You send an email on a Friday afternoon: "I discussed the issue with the manager in the meeting." An hour later, someone replies asking whether the discussion happened in the meeting, or whether you mean the manager who was in the meeting β€” as opposed to some other manager. You knew exactly what you meant. The sentence, unhelpfully, didn't.

The culprit is that little tail on the end β€” in the meeting. That's a prepositional phrase, and when it lands in the wrong spot, your sentence wobbles just enough to generate a clarifying reply you didn't need to write.

Most adults use prepositional phrases constantly β€” at work, on the train, after lunch, with my team β€” without ever thinking about the machinery underneath. But when a colleague asks you to explain why a sentence is ambiguous, or when you're trying to tighten up a report, it helps enormously to know how these phrases are built and what job they're actually doing. Here's the thing: you don't need the whole of traditional grammar for this. You need a working grip on one pattern, and how it misbehaves.

Before you read on, here's where we're heading. By the end of this article, you'll be able to: - Identify a prepositional phrase and its basic structure (preposition + object). - Tell when a phrase is describing a noun versus describing an action. - Place prepositional phrases so your meaning is unmistakable in emails, reports, and everyday writing. - Spot and fix sentences where a prepositional phrase creates ambiguity or lands awkwardly.

Beginner (Foundation)

Let's start at the roots. A preposition is a small word β€” usually followed by a noun β€” that shows a relationship of place, time, direction, or manner. Common ones: in, on, at, by, with, to, from, into, over, under, after, before, during, between, through.

Take: "The keys are on the table." On is the preposition; it shows where the keys are, relative to the table.

A prepositional phrase is the preposition plus everything that follows it β€” usually a noun or noun phrase (H1.1 covers noun phrases properly, if you want the fuller picture). The noun after the preposition is called the object of the preposition.

preposition + object (usually a noun or noun phrase)

Real examples from a working day:

  • "I'll send the report after lunch." β†’ after + lunch
  • "Can we talk in your office?" β†’ in + your office
  • "She works from home on Fridays." β†’ from + home

These phrases answer questions like:

  • Where? β€” "The files are on the server."
  • When? β€” "We'll review this in the morning."
  • How? β€” "He replied with enthusiasm."
Common Mistake: Not every to introduces a prepositional phrase. "We're going to the office" has a genuine prepositional phrase (to + the office). But "I want to finish this today" β€” to finish is an infinitive verb, not a preposition with an object. If to is immediately followed by a verb, it's not doing preposition work.

Quick recap: - A preposition links a noun to something else β€” place, time, direction, or manner. - A prepositional phrase = preposition + its object, usually a noun phrase. - These phrases typically answer where?, when?, or how? - Watch the pattern: in the X, on my X, after the X, with X.

Intermediate (Development)

Once you can spot the structure, the next skill is recognising what a phrase is actually doing β€” because the same shape does two very different jobs, and knowing which one is at play tells you exactly where the phrase belongs.

Adjectival phrases: describing a noun

These sit right after the noun they describe and answer which one?

  • "The woman in the blue jacket is our new manager." β†’ which woman?
  • "I've lost the charger for my phone." β†’ which charger?
  • "We need someone with experience in marketing." β†’ which someone?

Move them away from their noun and the sentence starts to buckle: "The woman is our new manager in the blue jacket" now reads as though the job is "new manager in the blue jacket." As a rule of thumb: if the phrase describes a person or thing, keep it close to that person or thing.

Adverbial phrases: describing an action

These answer where?, when?, how?, or why? about the verb, not a specific noun:

  • "We met at the cafΓ©." (Where?)
  • "I'll email you after the call." (When?)
  • "She replied with surprising honesty." (How?)

Adverbial phrases move far more freely:

  • "I'll send it on Monday." (End position β€” neutral.)
  • "On Monday, I'll send it." (Front position β€” slightly softer, more emphatic.)

Fronting can genuinely change tone. "After the deadline, I'll need to charge a late fee" reads gentler than "I'll need to charge a late fee after the deadline" β€” same information, different feel. In formal writing, phrases mostly sit at the start or the end; stuffing one into the middle of a clause tends to read as clumsy.

Adjectival phrases don't get that freedom β€” they stay glued to their noun:

  • "The documents on your desk are for the meeting." βœ…
  • "The documents are for the meeting on your desk." ❌ β€” now on your desk looks like it belongs to meeting.
Pro-Tip: Unsure where to put an adverbial phrase in a work email? Put it at the end or the front of the sentence. Those two positions are almost always the clearest.

Stacking

You can chain phrases for detail, and professional writing does this constantly:

  • "We'll discuss this in the team meeting on Thursday after lunch."

That's fine as three phrases. It's when the chain gets longer that trouble starts β€” the reader has to do more and more work to figure out which noun each phrase belongs to. If a sentence starts to feel like Russian dolls, split it:

  • "We'll discuss this in Thursday's team meeting. Let's slot it in after lunch."
Common Mistake: Splitting a preposition from its object. "I'll get back to tomorrow your email" is wrong; keep preposition and object together and move the other words instead β€” "I'll get back to your email tomorrow."

Quick recap: - Adjectival phrases describe nouns and stay glued to them; adverbial phrases describe actions and move more freely. - Front or end position is usually clearest for adverbial phrases in professional writing. - Fronting a phrase can soften a demand or shift emphasis. - Stacking phrases adds detail, but a long chain increases the risk of ambiguity β€” split the sentence if it's getting heavy.

Advanced (Mastery)

This is the part that matters most if you write for a living, even informally: avoiding ambiguity and what's technically called a misplaced modifier. A full treatment of misplaced modifiers generally lives in our forthcoming Syntax pillar β€” here we'll deal with the specific, very common patterns that involve prepositional phrases.

Ambiguous attachment

An ambiguous sentence forces the reader to stop and think, "hang on, which way round do they mean this?" Take our opening example again:

  • "I discussed the issue with the manager in the meeting."

Does in the meeting describe where the discussion happened, or which manager (the one who's in the meeting, as opposed to another manager)? Fix it by moving or expanding the phrase:

  • "In the meeting, I discussed the issue with the manager." (Clearly describes the discussion.)
  • "I discussed the issue with the manager who was in the meeting." (Clearly describes the manager.)

The classic version of this trap:

  • "I saw the man with the telescope."

Either you used a telescope to see him, or he's the one holding it. Clarify with position or a relative clause:

  • "With the telescope, I saw the man." (You had it.)
  • "I saw the man who was holding the telescope." (He had it.)

Don't rely on the reader to work it out from context. Most people skim; they don't savour your sentences the way you wrote them.

Misplaced phrases with multiple nouns

A misplaced modifier is a phrase positioned so that it seems to attach to the wrong word. This happens most often when a sentence has several candidate nouns and only one phrase to attach:

  • "We sent an email to all staff in the finance department."

Does in the finance department describe all staff (i.e., only finance staff got the email) or is it oddly dangling near email? Probably the former, but it's not crisp. Sharpen it:

  • "We sent an email to everyone in the finance department."
  • "We sent an email to all staff, including finance."

The pattern to watch for: several nouns, one prepositional phrase, and no obvious signal for which noun it belongs to. When you spot that shape in your own draft, stop and check.

Pro-Tip: After drafting a key sentence β€” especially in a report or a contract β€” reread it once asking only: "What exactly does this prepositional phrase attach to?" If more than one answer is plausible, rewrite. Don't leave it to the reader's goodwill.

Fronted phrases and rhythm

Opening a sentence with a prepositional phrase is a legitimate, useful stylistic choice β€” it softens blunt statements, guides focus, and varies rhythm when several sentences in a row all start with "I" or "We":

  • "In the current climate, we need to be cautious."
  • "After the merger, morale dropped."

Watch the length, though. A long fronted phrase makes the reader wait too long for the actual subject and verb:

  • Clunky: "In light of the feedback from the last three quarterly surveys carried out by HR, we have decided to adjust the policy."
  • Tighter: "In light of feedback from the last three HR surveys, we've decided to adjust the policy."

Overstacking in formal writing

Professional documents accumulate prepositional phrases like barnacles on a hull:

  • "The proposal for the restructuring of the department in line with the guidelines from the board on expenditure…"

Five phrases, technically all correct, collectively exhausting. Rebuild around a verb instead of a noun:

  • "This proposal outlines how we'll restructure the department to follow the board's expenditure guidelines."

Often the sharpest edit isn't rearranging the phrases β€” it's cutting the preposition entirely by choosing a stronger verb:

  • "We need to do a review of the policy." β†’ "We need to review the policy."
  • "The implementation of the changes will begin…" β†’ "We'll begin implementing the changes…"
Common Mistake: Assuming that heavy use of phrases like in relation to, in respect of, with regard to makes writing sound more formal. It doesn't β€” it just makes it longer. One well-placed prepositional phrase beats three vague ones.

Quick recap: - Ambiguity from prepositional phrases usually comes down to attachment β€” check what each phrase is actually modifying. - When several nouns compete for one phrase, make the attachment explicit rather than leaving it to guesswork. - Fronted phrases can improve tone and rhythm, but shouldn't bury the main clause under their own length. - In formal writing, watch for "barnacle" stacking β€” simplify, or rebuild the sentence around a stronger verb.

UK vs US Note

The grammar of prepositional phrases β€” structure, adjectival/adverbial function, and placement β€” is identical across UK and US English. What varies is idiom: UK speakers say at the weekend; US speakers say on the weekend. UK English says someone is in hospital; US English says in the hospital. You'll also see amongst [US: among] and towards [US: toward] as house-style choices rather than errors. Spelling differences elsewhere β€” organisation [US: organization] β€” don't touch the grammar taught here; they're vocabulary sitting on identical structural bones.

Key Takeaways

  • A prepositional phrase is built from a preposition plus its object, usually a noun phrase.
  • These phrases modify either a noun (adjectival) or a verb/action (adverbial) β€” and that distinction dictates where they can move.
  • Adjectival phrases stay glued to their noun; adverbial phrases are flexible, with front or end position usually clearest.
  • Stacking phrases adds useful detail but is the most common source of ambiguity in professional writing.
  • Misplaced or over-stacked phrases should be fixed by moving them, rewording, or rebuilding the sentence around a stronger verb β€” never left for the reader to guess.

Check Your Understanding

  1. Underline the prepositional phrase(s) and name the preposition(s): a) "We'll review this in the meeting on Friday." b) "She left her notes on my desk."
  2. Is the prepositional phrase adjectival or adverbial? a) "The team in London will handle this." b) "I'll call you after the interview."
  3. Rewrite this sentence to remove the ambiguity: "I spoke to the manager about the budget in the corridor."
  4. Improve this sentence by repositioning or trimming the prepositional phrases: "In response to your email about the new system on Monday, I have attached a document with information about the training for staff in the sales department."
  5. Is this clear or ambiguous? Explain: "We're hiring a consultant with experience in finance in Europe."
Answer Key
  1. a) Phrases: in the meeting, on Friday; prepositions: in, on. b) Phrase: on my desk; preposition: on.
  2. a) Adjectival β€” describes which team. b) Adverbial β€” describes when you'll call.
  3. "In the corridor, I spoke to the manager about the budget" (emphasises place) or "I spoke to the manager about the budget while we were in the corridor" (removes ambiguity about attachment).
  4. E.g. "Thank you for Monday's email about the new system. I've attached information about the training for sales staff." β€” the fix separates the tangled phrases and brings related ideas together.
  5. Ambiguous. It could mean a consultant with finance experience who is based in Europe, or a consultant with experience in the European finance market specifically. Clearer: "We're hiring a consultant with finance experience, based in Europe" or "We're hiring a consultant with experience in European finance."
  • H1.1 β€” Noun Phrases (Pillar 1): for how the objects of prepositions are built.
  • H6.1 β€” Prepositions: Place, Time and Direction (UK and US editions): the word class in more depth.
  • H6.3 β€” Adverbs and Adverbial Phrases: the wider adverbial picture these phrases belong to.
  • H4.3 β€” Sentence Structure: Subjects, Verbs and Objects: how these phrases fit into full sentence patterns.
  • Forward β€” the future Syntax pillar's article on misplaced modifiers, for the fuller technical treatment of ambiguity and placement.