Prepositions in English are difficult because the rules are not always logical. We say 'at eight o'clock' but 'in the morning'. We say 'on Monday' but 'in March'. Here are the main rules. For time: use 'at' for specific times (at noon, at midnight, at 3pm). Use 'on' for days and dates (on Tuesday, on 14th February). Use 'in' for months, seasons, and years (in summer, in 2025). For place: use 'at' for locations treated as points (at the office, at home, at the station). Use 'on' for surfaces (on the desk, on the first floor). Use 'in' for enclosed spaces (in the room, in Madrid). Learning these with fixed phrases is the most efficient method.

💡 Did you know? Prepositions are among the most frequently used words in English — the top 25 most common English words include 'in', 'of', 'to', 'for', and 'on'. Yet they are notoriously hard to master in a second language.