Choose prepositions that express the right relationship.

1. Learn the relationship, not one translation

A preposition connects a word or phrase with another part of a sentence. In “The workshop starts at six”, at introduces a clock time. In “She is interested in design”, in belongs to the adjective pattern interested in. These uses need different learning strategies. A time expression can often be grouped with other times, while a dependent preposition is best learned with the word that selects it.

Start by identifying the relationship: time, position, movement or a conventional word partnership. Then read the entire phrase. The same noun can appear after different prepositions when the meaning changes. “In the library” locates someone inside the building; “near the library” places them close to it; “to the library” describes a destination. Choosing by the noun library alone would miss the intended relationship.

This lesson uses contexts with clear answers. Some everyday combinations vary across English varieties, especially expressions involving weekends, streets and institutions. Those differences are not a useful basis for marking a learner wrong without context. Instead, the exercises focus on stable time patterns, transparent movement and common adjective or verb combinations. Where another form expresses a different meaning, the key explains the distinction.

2. Organise useful patterns into small groups

Do not insert a preposition before every time phrase. “Next Monday”, “last year” and “this morning” usually function as time expressions without at, in or on. Compare “on Monday” with “next Monday”. Likewise, some verbs take a direct object: “discuss the problem”, “enter the room” and “reach the station”. A preposition that is necessary after one verb may be unnecessary after a related verb.

A preposition is followed by a noun phrase, a pronoun or, when expressing an activity, an -ing form: “after the lesson”, “with them”, “without checking”. Contrast this with a conjunction introducing a clause: “after the lesson ended”. Both are useful structures. The choice depends on what follows, not simply on whether after appears.

3. Distinguish a deadline from an ongoing action

4. Try twelve focused decisions

Work through all twelve items before opening the explanations. Write your choice or revision and a short reason in a notebook. A correct guess is worth revisiting: the aim is to recognise the relationship in a new sentence, not remember the order of answers.

1. Choose: The appointment begins at / on 10:15.
2. Choose: We meet in / on Wednesday.
3. Choose: The course starts in / at September.
4. Choose: I have used this notebook since / for January.
5. Choose: The recording lasts since / for twenty minutes.
6. The form may be submitted earlier, but no later than noon: “Submit it by / until noon.”
7. The shop remains open continuously up to six: “It is open by / until six.”
8. Choose: I am interested in / on environmental design.
9. Choose: Small teams often rely on / at clear communication.
10. Repair the unnecessary word: “We discussed about the timetable.”
11. Choose: Check the file before sending / to send it.
12. Repair: “The next practice session is on next Monday.”

5. Check the reasoning, not just the answer

6. Build a phrase bank with a meaning test

Choose four patterns from the lesson: one calendar expression, one deadline, one dependent preposition and one activity after a preposition. Write a sentence you could genuinely use in a message about studying. Then change one element while keeping the pattern: at nine becomes at eleven, and interested in design becomes interested in history.

When a correction changes by to until, record the intended meaning as well as the edited word. A list saying “until was wrong” is too vague to reuse. For dependent patterns, save the full phrase and its object. Review these short combinations in context, then check whether they appear accurately in your next paragraph or spoken answer.