English grammar · Beginner
English Prepositions
Prepositions are the short words (in, on, at, to, for, with, by, from) that link a noun to the rest of the sentence and say where, when, or how it relates. English has around 150, but a dozen do most of the work, and three of them, in, on, and at, cause most of the trouble because they cover both place and time.
What it is
A preposition goes in front of a noun, pronoun, or -ing form and makes a phrase that tells you position (on the table), time (at noon), direction (towards the exit), or a more abstract relationship (a book about grammar, afraid of spiders). The noun after it is its object, which is why it is me and not I after a preposition: between you and me.
The keys are in the drawer, on the left, at the back. Three prepositions of place, three degrees of precision.
How to spot it
Look for a small word directly before a noun phrase that tells you where, when, or what relationship. If the small word has no noun after it (she came in, turn it off), it is an adverb particle, not a preposition.
- She lives in Madrid. (place: inside an area)
- The meeting is on Monday. (time: a day)
- We met at the station. (place: a point)
- I'm interested in history. (dependent preposition fixed by the adjective)
For in, on, and at, the picture is the same for place and time: in for an enclosed space or a long period, on for a surface or a day, at for a point in space or a point on the clock.
Prepositions Quick Reference
In, on, and at for place and time
| Preposition | Place | Time |
|---|---|---|
| in | a country, city, room, container: in France, in the kitchen, in a box | months, years, seasons, parts of the day: in May, in 2024, in the morning |
| on | a surface or line: on the table, on the wall, on the coast | days and dates: on Monday, on 4 July, on my birthday |
| at | a point or a place seen as a point: at the door, at the bus stop, at work | clock times and holidays: at six, at noon, at Christmas |
All 3 prepositions lessons
The three pages here divide the topic the way learners search for it. Prepositions in English is the overview: what a preposition is, the main types, and how verbs and adjectives take fixed prepositions. Prepositions of place covers in, on, at and the rest for location. In, on, at covers the same three words for time, where the choice between months, days, and clock times follows its own rules. Prepositions that belong to a specific verb or adjective are covered on the pages for those structures.
- Prepositions in English: A preposition is a short word (in, on, at, to, from, with, about) that links a noun or pronoun to the rest of the sentence and shows the relationship between them: where something is, when it happens, where it is moving, or how it connects to a verb or adjective. Prepositions never change form, and each one is followed by a noun, a pronoun, or an -ing form, never by a bare verb.
- Prepositions of Place: Prepositions of place tell you where something is in relation to something else. The three most common, in, on, and at, follow a simple picture: in for a space with an inside (in the box, in London), on for a surface or a line (on the table, on the coast), at for a point (at the door, at the station). The rest (under, behind, between, next to, opposite, above, below) describe position in relation to a second object.
- In, On, At: In, on, and at are the three prepositions English uses to place an event in time. In covers long periods (months, years, seasons, centuries) and parts of the day; on covers days and dates; at covers exact clock times and a few fixed points such as night, the weekend, and holiday periods. The system runs from large to small, and a handful of time words (last, next, this, every, yesterday, tomorrow) take no preposition at all.
Prepositions FAQs
- How many prepositions are there in English?
- Around 150 if you count every compound and rarity, but about 25 account for nearly all everyday use. Of, in, to, for, with, on, at, from, by, and about are the ten most frequent, and in, on, and at are the three that learners need to study rather than simply pick up.
- What is the difference between in, on, and at for place?
- In is for being inside a space with boundaries: in the room, in the city, in the car. On is for a surface or a line: on the floor, on the wall, on the river. At is for a point, or a place treated as a point where an activity happens: at the door, at the station, at school. The same object can take different prepositions depending on how you picture it: in the corner of a room, at the corner of a street.
- Can a sentence end with a preposition?
- Yes, and in questions and relative clauses it is the natural choice: Who are you talking to? That's the book I told you about. Moving the preposition forward (To whom are you talking?) is grammatical but formal. The rule against ending with a preposition was borrowed from Latin and never described real English.
- Why is it interested in but keen on?
- Because some prepositions are fixed by the adjective, verb, or noun before them rather than chosen for meaning. Interested in, keen on, afraid of, good at, depend on, listen to, and reason for have to be learned as pairs. Grouping them by preposition helps, but exposure to them in real sentences is what makes them automatic.
- Do I use to or for after verbs like give and buy?
- Use to when the object moves to a recipient: give the book to me, send it to her. Use for when something is done on someone's behalf or benefit: buy a gift for him, make dinner for us. Both structures can also drop the preposition by moving the person before the thing: give me the book, buy him a gift.