Prepositions are small words with enormous impact. Using the wrong preposition — interested in vs interested at, arrive in vs arrive to — is one of the most persistent errors even for advanced learners. Unlike most grammar rules, preposition usage is often fixed by convention rather than logic, which is why plenty of exposure and practice is the most effective strategy.
Prepositions of Time: in, on, at
The three core time prepositions follow a simple size rule: at for precise times and fixed expressions, on for days and dates, in for longer periods.
- at: at 7 o'clock, at midnight, at the weekend (BrE), at Christmas, at noon
- on: on Monday, on 5 June, on my birthday, on Christmas Day
- in: in the morning, in June, in 2025, in the 19th century, in winter
Prepositions of Place: in, on, at
The same three prepositions behave differently for location. At for points and locations seen as a single point; on for surfaces and public transport; in for enclosed spaces and areas.
- at: at the bus stop, at school, at the door, at home
- on: on the table, on the wall, on the bus, on the left
- in: in the box, in the city, in the car, in the world
Prepositions of Movement
Movement prepositions describe direction: to (destination), from (origin), into/out of (entering/leaving), through (from one side to another), across (from one side to the opposite), along (following a line), past (going beyond), over/under (above/below).
Dependent Prepositions (Fixed Phrases)
Many verbs, adjectives and nouns are followed by a fixed preposition that must simply be memorised: interested in, good at, afraid of, depend on, consist of, apply for, responsible for, married to, different from, similar to, participate in, agree with. Regular practice in context is the most reliable way to internalise these.
Practice Exercises
See also: English Phrasal Verbs Guide and Phrasal Verbs Practice.
Practice What You've Learned
LexFizz has 30 free interactive exercises — no sign-up needed.
Browse All Exercises →
Explore other grammar topics: All Grammar TopicsArticlesPhrasal VerbsPresent Simple
Frequently Asked Questions
What is the difference between 'in', 'on' and 'at' for time?
Use 'at' for precise times and fixed expressions: at 7 o'clock, at midnight, at the weekend, at Christmas. Use 'on' for days and specific dates: on Monday, on 5 June, on my birthday. Use 'in' for longer periods: in the morning, in June, in 2025, in the 20th century. The rule of thumb is that 'at' is the most specific (a point), 'on' is a day, and 'in' is a longer period.
When do we say 'arrive in' versus 'arrive at'?
Use 'arrive in' for cities, countries and large areas: arrive in London, arrive in France. Use 'arrive at' for specific locations, buildings and points: arrive at the airport, arrive at school, arrive at the station. You also use 'arrive at' for events: arrive at a conclusion, arrive at a decision. A common mistake is saying 'arrive to' — English uses 'in' or 'at', never 'to', with arrive.
What are dependent prepositions and how do I learn them?
Dependent prepositions are fixed prepositions that follow specific verbs, adjectives or nouns: interested in, good at, afraid of, depend on, apply for, responsible for, agree with, different from. They cannot be predicted by meaning alone and must be memorised. The most effective strategy is to learn them in phrases in context — reading and listening to authentic English, and practising with cloze and complete-the-sentence exercises.
Is it 'in the end' or 'at the end'?
'At the end' refers to the final point of something specific: at the end of the film, at the end of the street. 'In the end' is an adverbial phrase meaning 'finally' or 'eventually', summarising an outcome: We argued for hours, but in the end we agreed. The two are not interchangeable. A memory aid: 'at the end' tells you WHERE or WHEN something stops; 'in the end' tells you WHAT HAPPENED ULTIMATELY.
What is the difference between 'by' and 'until' for time?
'By' means 'no later than' — the action must be completed before or at that time: Submit the report by Friday (any time up to and including Friday). 'Until' means 'continuing up to that point and then stopping': I will wait until Friday (I keep waiting right up to Friday). Use 'by' for deadlines and 'until' for duration: She worked until midnight. The essay must be submitted by midnight.
How do prepositions of movement differ from prepositions of place?
Prepositions of place are static — they describe where something is: The book is on the table. Prepositions of movement describe direction of travel: She put the book onto the table. Key movement prepositions: to (destination), from (origin), into/out of (entering/leaving an enclosed space), through (from one side to another), across (from one side of a surface to the other), along (following a path), past (going beyond), over/under (above/below in motion).
What preposition follows 'interested'?
The correct preposition is 'interested in': I am interested in history. She is interested in learning Spanish. A very common mistake is 'interested on' or 'interested at'. The noun 'interest' also takes 'in': I have an interest in music. The related adjective 'interesting' does not take a preposition: The lecture was interesting (not 'interesting in something').
What is the correct preposition after 'different'?
In standard British English, 'different from' is the traditional and preferred form: This model is different from the previous one. 'Different to' is also widely used and accepted in informal British English. 'Different than' is the standard American form. For IELTS and Cambridge exams, 'different from' is the safest choice and will never be marked as incorrect.
Can a sentence end with a preposition in English?
Yes. The rule that sentences should not end with prepositions is an 18th-century prescription now considered outdated. In natural English, ending a sentence with a preposition is perfectly acceptable and often sounds more natural than avoiding it: What are you looking for? (not: For what are you looking?). The 'rule' applies to very formal written contexts, but even there ending with a preposition is widely accepted.
What are the most commonly confused English prepositions?
The most commonly confused pairs and groups are: in/on/at (time and place); by/until (deadlines vs duration); for/since (duration vs starting point with present perfect); in/into (static location vs movement); on/onto (static vs movement); to/at/in (destination with movement verbs: go to, look at, believe in). Regular practice with contextual exercises is the most effective way to resolve these confusions.