2.4 Prepositions of Time, Place & Movement

Time Relationships Change the Required Action

A small preposition can change what a colleague must do. Send the report by Friday gives a latest time. Work on the report until Friday describes a continuing activity. Work on it for two days gives a duration without naming its exact start. Learning these relationships is more useful than memorizing one translation for each word.

Begin with common calendar expressions. Use at with a clock time: at nine, at 14:30, at noon. Use on with a named day or date: on Monday, on October 18, on Monday morning. Use in for a month, year, season, or broad part of the day: in October, in 2026, in the morning. Conventional expressions vary: at night, at the weekend in British English, and on the weekend in American English are familiar examples.

Do not insert on automatically before next Monday, or in before last year. Compare on Monday with next Monday. Also distinguish in two hours from for two hours: The office will reopen in two hours predicts when; The office will be closed for two hours states how long.

Deadlines, Continuation, and Intervals

By means no later than the stated point: Please submit the form by 5:00. Earlier submission is allowed. Until or till marks continuation: Reception is open until 5:00. It does not mean that reception will open at 5:00. With a negative, not until can indicate a later start: The manager will not arrive until 5:00 means the manager is not expected earlier.

Before says an event precedes another point; after says it follows. Call before noon normally excludes noon itself, while call by noon includes noon as the deadline. Everyday wording such as by Friday can leave the exact clock cutoff unspecified. Do not invent midnight, close of business, or a time zone if the message supplies none; request clarification in real communication.

From ... to ... sets a range: The desk is staffed from nine to five. Between ... and ... also expresses an interval: Deliveries arrive between nine and eleven. Avoid mixing the conventional pairs as between nine to eleven. In an exercise, attend to whether the question asks about the beginning, end, or length of the window.

Read this example: The training room is unavailable from 13:00 to 15:30. Send any alternative-room request by 12:00. The unavailable period lasts two hours and thirty minutes, but the request deadline is noon. Choosing 15:30 for the request would confuse the end of an outage with the action required before it.

Since, For, During, and Within

Since names the starting point of a situation continuing to another reference time: She has worked here since May. For measures duration: She has worked here for five months. For is not restricted to the present perfect: She worked there for five months describes a finished period, and She will stay for five months refers to the future.

During takes a noun phrase naming a period or event: during the meeting. While introduces a clause: while the manager was speaking. Within sets an outside limit measured from a reference point: We will reply within two working days. It does not mean the reply must take exactly two full days. The treatment of working days and holidays must come from the stated policy rather than an assumption.

Location and Movement

At commonly treats a place as a point or activity location: at reception, at work, at the station. In can emphasize an enclosed space or wider area: in the meeting room, in London. On commonly locates something on a surface or level: on the desk, on the second floor. More than one can fit a place with different perspectives: at the office and in the office are both ordinary English.

Movement can require a different word. Go to reception gives a destination. Walk into the room describes entering it; put the files onto the shelf emphasizes transfer to a surface. In ordinary usage, put the files on the shelf is also possible, so do not treat onto as mandatory after every movement verb.

• Across: from one side to another, as in walk across the courtyard.
• Through: passing within, as in go through the security gate.
• Past: beyond something, as in walk past the lift.
• Along: following a line or route, as in continue along the corridor.
• Opposite: facing another location, as in the office opposite reception.
• Next to: immediately beside, as in the printer next to the window.

Read Directions as a Sequence

Original practice notice: Enter through the south door. Walk past reception and turn left. The training room is opposite the lift. Visitors must sign in at reception before going to the room. The route and the sign-in requirement describe different parts of the same task. Past reception does not cancel sign in at reception; the visitor should complete the prerequisite before continuing.

For transport, learn ordinary combinations such as by train, by bus, on foot, on the train, and in a car. A mode of travel without a determiner commonly uses by: She travels by train. Referring to a particular vehicle can change the construction: She left her bag on the train. Check whether the sentence is about method, location, direction, or time before selecting a preposition.

Further Language Reference

Cambridge English Grammar Today: At, on and in: time, checked October 18, 2026. This is a language reference, separate from Bright’s test information.