Time Expressions — In the Morning, At Night, At Three O'Clock — English Grammar Exercises
in the 1950s, on the left, at three o'clock, by train — master the hardest article choices in English
Time Expressions: 'The' or No Article?
Time expressions in English split into two clearly defined groups for article use. The division is not semantic but lexical — it depends on which preposition introduces the expression and which specific time word is used. Learner corpus data confirms that 'in morning' (missing 'the') and 'at the night' (incorrect 'the') are among the most frequent time-expression article errors at B1–B2 level, often appearing together in the same sentence.
Parts of the Day: 'In' + 'The'
Morning, afternoon, and evening are parts of the day. With the preposition 'in', they always take 'the'.
She feels most energetic in the afternoon.
We have dinner together in the evening.
Fixed Time Points: 'At' + No Article
Night, midnight, noon, dawn, dusk, sunset, and sunrise are fixed time-point expressions with 'at'. No article is used.
The shop closes at — midnight.
We went for a walk at — sunset.
The meeting is at — three o'clock. (clock times — never use 'the')
Common Mistakes
✗ She works at the night. → ✓ She works at — night.
✗ The meeting is at the three o'clock. → ✓ The meeting is at — three o'clock.
Frequently Asked Questions
When do you use 'the' with geographical names?
The rules are pattern-based. Rivers, oceans, seas, and deserts always take 'the': the Amazon, the Pacific, the Sahara. Mountain ranges take 'the' but individual peaks do not: the Alps, the Andes — but Mount Everest, Mount Fuji. Countries with a political word or a plural name take 'the': the United Kingdom, the United States, the Czech Republic, the Netherlands — but France, Japan, Brazil, Poland take no article. Continents never take 'the': in Africa, across Europe, throughout Asia. Individual lakes take no article when the word 'Lake' appears in the name: Lake Geneva, Lake Victoria — but the Great Lakes (plural).
Why do we say 'in the morning' but 'at night'?
'In the morning', 'in the afternoon', and 'in the evening' all use 'the' with the preposition 'in'. But 'at night', 'at midnight', 'at noon', 'at dawn', 'at sunset', and 'at sunrise' use no article — these are fixed expressions treated as singular unique time points. The rule is not fully logical; it must be memorised as a set. A useful anchor: if the preposition is 'in' + a part of the day, use 'the'. If the preposition is 'at' + a time word, use no article.
What is the difference between 'go to school' and 'go to the school'?
Institutional nouns — school, hospital, prison, church, university, college, bed, work — drop the article when used for their primary purpose. 'Go to school' means going as a student to learn; 'go to the school' means visiting the physical building for any other reason (as a parent, a plumber, a visitor). The same logic applies across the set: 'in hospital' (as a patient) vs 'at the hospital' (visiting); 'go to prison' (as a prisoner) vs 'visit the prison' (as a tourist); 'go to bed' (to sleep) vs 'sit on the bed' (the furniture).
Why is there no article in 'by bus', 'by train', 'by car'?
The 'by + transport' pattern treats the vehicle as a method of travel, not a specific object, so no article is used: by bus, by train, by car, by plane, by taxi, by bike. The article returns when the preposition changes: 'on the bus' (on a specific bus), 'in the car' (inside a specific vehicle), 'in a taxi' (in one particular taxi). The key signal is the preposition 'by' — whenever 'by' means the mode of transport, never use an article.