Complete Grammar Syllabus (145 Units)

Grammar Mastery

Comprehensive reference, real-world IELTS band-boosting tips, clear structural formulas, and interactive short quizzes for intermediate to advanced English learners.

Prepositions: Time & Movement (At, On, In, To, Into)

Mastering time prepositions (at 5 o'clock, on Friday, in July), on time vs in time, at the end vs in the end, and movement to vs position in/at.

Core Structure & Formula

At: Exact clock times, points (at 6.00, at midnight, at lunchtime, at night, at the weekend)

On: Days & full dates (on Friday, on 16 May, on Independence Day, on Tuesday morning)

In: Longer periods (in August, in 2024, in the 21st century, in the evening, in 10 minutes)

On time (= punctual) vs In time (= soon enough before a deadline)

In the end (= finally after struggle) vs At the end of (= at the termination point of something)

AAt / On / In (Time)

Rules for precise moments, days, and extended time periods.

•The exam starts at 9.00 am on Monday in June.

•No preposition before: last, next, this, every (I'll see you next Friday).

•In a few minutes = a few minutes from now (The connecting flight leaves in five minutes).

BOn time vs. In time

'On time' = punctual according to the schedule. 'In time' = early enough to do something before it is too late.

•The 9.45 train departed on time. (exactly at 9.45)

•We arrived just in time to catch the connecting flight. (almost missed it, but made it)

CMovement (To, Into) vs Position (At, In)

'To' and 'into' indicate direction of travel. 'At' and 'in' describe static position.

•We drove to the conference centre. / We arrived at the conference centre.

•She walked into the auditorium and sat down.

•Note: Go home, come home, get home have NO preposition.

IELTS Band 7–9 Exam Impact

Preposition accuracy in IELTS Writing Task 1 date and time descriptions ("in 2015", "by the end of the decade", "from January to March").

Common Candidate Errors

✗ I will see you on next Friday.

✓ I will see you next Friday.

Do not use at/on/in before 'next', 'last', 'this', or 'every'.

✗ What time did you arrive to Vancouver?

✓ What time did you arrive in Vancouver? (or arrive at the airport)

Arrive takes 'in' (cities/countries) or 'at' (buildings/events), never 'to'.

Unit 121 Interactive Short Quiz

Test your understanding with 3 verified practice exercises.

Question 1 of 3

The bridge was completed ______ 1937.

Question 2 of 3

The rail network is reliable. The trains are almost always ______ time.

Question 3 of 3

What time did your flight arrive ______ the airport?