Tra từ then - Từ điển Oxford Advanced Learner 8th

then adverb, adjective BrE [ðen] NAmE [ðen]
adverb
1. used to refer to a particular time in the past or future
• Life was harder then because neither of us had a job.
• Things were very different back then.
•She grew up in Zimbabwe, or Rhodesia as it then was.
•I saw them at Christmas but haven't heard a thing since then.
•I've been invited too, so I'll see you then.
•There's a room free in Bob's house next week but you can stay with us until then.
•Call again next week. They should have reached a decision by then.
•Just then (= at that moment) there was a knock at the door.
•She left in 1984 and from then on he lived alone.
•I took one look at the car and offered to buy it there and then/then and there (= immediately).
2. used to introduce the next item in a series of actions, events, instructions, etc.
• He drank a glass of whisky, then another and then another.
• First cook the onions, then add the mushrooms.
•We lived in France and then Italy before coming back to England.
3. used to show the logical result of a particular statement or situation
• If you miss that train then you'll have to get a taxi.
• ‘My wife's got a job in Glasgow.’ ‘I take it you'll be moving, then.’
•‘You haven't done anything to upset me.’ ‘So what's wrong, then?’
•Why don't you hire a car? Then you'll be able to visit more of the area.
4. used to introduce additional information
• She's been very busy at work and then there was all that trouble with her son.
5. (formal)used to introduce a summary of sth that has just been said
• These, then, are the main areas of concern.
6. used to show the beginning or end of a conversation, statement, etc.
• Right then, where do you want the table to go?
• ‘I really have to go.’ ‘OK. Bye, then.’
•OK then, I think we've just about covered everything on the agenda.
more at (every) now and again/thennow then at ↑now _adv.

Word Origin:
Old English thænne, thanne, thonne, of Germanic origin; related to Dutch dan and German dann, also to ↑that and ↑the.

Language Bank:
process
Describing a process
▪ This diagram illustrates the process of ▪ paper-making. / This diagram shows how ▪ paper is made.
First ▪ / First of all ▪, logs are delivered to a paper mill, where the bark is removed and the wood is cut into small chips.
Next ▪ / Second ▪, the wood chips are pulped, either using chemicals or in a pulping machine.
▪ Pulping breaks down the internal structure of the wood and enables ▪ / allows ▪ the natural oils to ▪ be removed.
Once ▪ / After ▪ the wood has been pulped, the pulp is bleached in order to ▪ remove impurities. /…is bleached so that ▪ impurities can ▪ be removed.
The next stage is to ▪ feed the pulp into the paper machine, where it is mixed with water and then ▪ poured onto a wire conveyor belt.
As ▪ the pulp travels along the conveyor belt, the water drains away. This causes ▪ the solid material to ▪ sink to the bottom, forming a layer of paper.
At this point ▪ the new paper is still wet, so ▪ it is passed between large heated rollers, which press out the remaining water and simultaneously ▪ dry the paper. / …dry the paper at the same time ▪.
The final stage is to ▪ wind the paper onto large rolls. / Finally ▪, the paper is wound onto large rolls.
notes at ↑firstly, ↑lastly
Language Banks at ↑conclusion, ↑first
Idioms: ↑but then ▪ ↑but then again ▪ ↑then again ▪ ↑… and then some

adjective only before noun used to describe sb who had a particular title, job, etc. at the time in the past that is being discussed
• That decision was taken by the then president.

Word Origin:
[then] Old English thænne, thanne, thonne, of Germanic origin; related to Dutch dan and German dann, also to ↑that and ↑the.