Instructor
Farhan Quraishi
- Description
- Curriculum
- FAQ
- Reviews
How do I use in, on, and at for time?
Use in for months, years, seasons, and long periods (in June, in 2022, in summer). Use on for days and dates (on Monday, on 14 May). Use at for exact times and festive periods (at 6 pm, at midnight, at Christmas).
How do I use in, on, and at for place?
Use in for enclosed or large areas (in a room, in London, in the park). Use on for surfaces and transport (on the table, on a bus). Use at for specific points or events (at the door, at school, at a concert).
What is the difference between for and since?
Use for to show duration (for two years, for a long time). Use since to show the starting point (since 2020, since Monday). Often with the present perfect: I have lived here for five years; She has worked here since 2019.
What is the difference between by and until?
By means no later than a time; something can happen before that deadline (Finish by 5 pm). Until means up to a time, continuing to that point (Wait until 5 pm). With negatives: I won't finish by 5; I won't work until 5.
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