Tra từ active - Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

active UK US [ˈæk.tɪv] adjective

BUSY/INVOLVED

1. <E > busy with or ready to perform a particular activity
• physically/mentally active
• You've got to try to keep active as you grow older.
• Enemy forces remain active in the mountainous areas around the city.
• She's very active in (= involved in) local politics.
• Both of his parents were very politically active.
• It is important to educate children before they become sexually active.
• He takes a more active role in the team nowadays.
• She's an active member of her trade union (= not only belongs to it, but does work to help it).
Thesaurus⁺: ↑Busy and active ↑Hurrying and doing things quickly
2. describes a volcano that might erupt (= throw out hot liquid rock or other matter) at any time
Thesaurus⁺: ↑Earthquakes and volcanic eruptions

• It's good for old people to stay active if they can.
• I had an active social life when I was at college.
• At 84 he's still quite active, although he walks with the aid of a stick.
• The both play an active part in their local church.
• It was a very active day on the stock market today.

GRAMMAR

3. <A > An active verb or sentence is one in which the subject is the person or thing which performs the stated action
• 'Catrin told me' is an active sentence, and 'I was told by Catrin' is passive.
Compare passive
Thesaurus⁺: ↑Verb forms, tenses and types of verbs

• When you use active verbs in your written work, rather than passive ones, it sounds clearer and more direct.
• Active sentences, such as 'The dog chased the cat', are more concise than passive sentences like 'The cat was chased by the dog'.
• Speech-writers should use active verbs for a strong, direct style.
• The sentence 'Oranges contain Vitamin C' uses an active verb.
• In the sentence 'A thief stole my wallet', the verb is active and in the past simple tense.