Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Origin: dure 'to continue in existence' (13-19 centuries), from Old French durer, from Latin durare

during

preposition
     
dur‧ing S1 W1
1 from the beginning to the end of a period of time:
During the summer she worked as a lifeguard.
He slept calmly during the early part of the night.
Foxes remain hidden during the day.
2 at some point in a period of time:
My father was killed during the war.
I mentioned the subject during our discussions at her Washington office.

WORD CHOICE: during, while!! Do not say 'during doing something'. Say while doing something While travelling to work, I saw an accident (NOT During travelling to work, I saw an accident).!! Do not say 'during someone does something'. Say while someone does something He stole her money while she slept (NOT He stole her money during she slept).!! Do not say 'during someone is young/asleep etc'. Say while someone is young/asleep etc It's best to get your teeth fixed while you're still young (NOT during you're still young).during, for, or since? See note at SINCE
WORD CHOICE: WORD CHOICE:

since, for, during, over
Use since to say that something started at a point in time in the past, and is still continuing He has been living in Leeds since 1998. We've known about it since May. Since is usually followed by a time expression ('last year', 'this morning', '4 o'clock' etc) or by the simple past tense. Use the present perfect or the past perfect in the other clause I have loved movies since I first went to the cinema. He had been seriously ill since Christmas.!! Speakers of British English usually say it is a long time/two weeks etc since..., and speakers of American English it has been a long time/two weeks etc since..., but both uses are correct It's weeks (BrE)/It's been weeks (AmE) since I saw Grandma.Use for when you state the length of time that something has been happening We have known each other for ten years (NOT since ten years). I had been waiting for hours (NOT since hours). I haven't seen him for ages (NOT since ages).During and over are used when you state the period of time in which something happens or changes During her first year at college, she had several boyfriends. Over the last six months, crime has doubled.See also since

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