Tra từ announce - Từ điển Oxford Advanced Learner 8th

an·nounce [announce announces announced announcing] BrE [əˈnaʊns] NAmE [əˈnaʊns] verb
1. to tell people sth officially, especially about a decision, plans, etc
•~ sth They haven't formally announced their engagement yet.
• (figurative) A ring at the doorbell announced Jack's arrival.
•~ sth to sb The government yesterday announced to the media plans to create a million new jobs. You cannot ‘announce somebody something’: They announced us their decision.
•~ that… We are pleased to announce that all five candidates were successful.
•it is announced that… It was announced that new speed restrictions would be introduced.
2. to give information about sth in a public place, especially through a ↑loudspeaker
•~ sth Has our flight been announced yet?
• The winners will be announced in reverse order.
•+ speech ‘Now boarding flight 897, destination Seattle,’ the loudspeaker announced.
•~ that… They announced that the flight would be delayed.
3. to say sth in a loud and/or serious way
•+ speech ‘I've given up smoking,’ she announced.
•~ that… She announced that she'd given up smoking.
4. ~ yourself/sb to tell sb your name or sb else's name when you or they arrive at a place
•Would you announce the guests as they arrive? (= call out their names, for example at a formal party)
5. ~ sth to introduce, or to give information about, a programme on the radio or television
Verb forms:

Word Origin:
late 15th cent.: from French annoncer, from Latin annuntiare, from ad- ‘to’ + nuntiare ‘declare, announce’ (from nuntius ‘messenger’).

Thesaurus:
announce verb T
•Has our flight been announced yet?
declare • • state • |formal proclaim • • pronounce •
announce/declare/state/proclaim/pronounce sth to sb
It was announced/declared/stated/proclaimed that…
announce/declare/state/proclaim/pronounce sth formally/officially
Announce or declare? Announce is used more often for giving facts; declare is used more often for giving judgements:
•They haven't formally announced their engagement yet.
✗ They haven't formally declared their engagement yet.:
•The painting was declared to be a forgery.
✗ The painting was announced to be a forgery.

Synonyms:
declare
state • indicate • announce
These words all mean to say sth, usually firmly and clearly and often in public.
declare • (rather formal) to say sth officially or publicly; to state sth firmly and clearly: ▪ to declare war ◇ ▪ The painting was declared to be a forgery.
state • (rather formal) to formally write or say sth, especially in a careful and clear way: ▪ He has already stated his intention to run for election.
indicate • (rather formal) to state sth, sometimes in a way that is slightly indirect: ▪ During our meeting, he indicated his willingness to cooperate.
announce • to tell people officially about a decision or plans; to give information about sth in a public place, especially through a loudspeaker; to say sth in a loud and/or serious way: ▪ They haven't formally announced their engagement yet. ◇ ▪ Has our flight been announced yet?
declare or announce?
Declare is used more often for giving judgements; announce is used more often for giving facts: The painting was announced to be a forgery. ◇ They haven't formally declared their engagement yet.
to declare/state/indicate/announce that…
to declare/state sb/sth to be sth
to declare/state/indicate/announce your intention to do sth
to declare/state/announce sth formally/publicly/officially
to declare/state/announce sth firmly/confidently

Example Bank:
•He announced to the crowd that the war was over.
•Mr and Mrs James are pleased to announce the engagement of their daughter, Henrietta.
•The company proudly announced the launch of its new range of cars.
•We expect to announce details of the plan later this week.
•We regret to announce the death of our chairman, Alfred Sidebottom.
•‘I've given up smoking,’ she announced.
•They haven't formally announced their engagement yet.