Prepositions of time

Prepositions of time
in on at
in 1998, in 2012
days of the week
on Thursday, on Friday
hours of the clock
at 7.30, at 8 o'clock
in January, in February
on 28 June, on 25 October
religious festivals
at Easter, at Christmas
parts of the day
in the morning, in the afternoon, in the evening BUT at night)
on Monday morning
on Thursday evening
on Friday night
points in time
at the beginning, at the end of the week
in spring, in summer, in autumn, in winter
Prepositions of time (during, for, over, by, until)
We use during to talk about something that happens within a particular period of time, to say when something takes place. We use during to talk about something that happens within the same time as another event. During my time in London I visited a lot of interesting places.

He came to work during the morning meeting.
We use over or in to talk about something that has been happening continuously up until the present, or will happen continuously in the future. We've had a lot of problems over / in the last few months.
We expect a rise in sales over / in the next few months.
We use for to say how long something continues. I can only come for a few minutes.
I was waiting for him for two hours.
We use by to say that something will happen or be achieved before a particular time. It has to be finished by two o'clock.
He should return by the end of March.
We use until to say that something will continue up to a particular time. We'll be here until July.
The concert went on until eleven o'clock.
We use in to express a time (in the future) from now. I'm going on holiday in a week. (one week from now)
I'll be back in five minutes. (five minutes from now)

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