| 释义 |
ascertain
as·cer·tain A0453400 (ăs′ər-tān′)tr.v. as·cer·tained, as·cer·tain·ing, as·cer·tains 1. To discover with certainty, as through examination or experimentation. See Synonyms at discover.2. Archaic To make certain, definite, and precise.
[Middle English acertainen, to inform, from Old French acertener, ascertain- : a-, to (from Latin ad-; see ad-) + certain, certain; see certain.]
as′cer·tain′a·ble adj.as′cer·tain′a·ble·ness n.as′cer·tain′a·bly adv.as′cer·tain′ment n.ascertain (ˌæsəˈteɪn) vb (tr) 1. to determine or discover definitely2. archaic to make certain[C15: from Old French acertener to make certain] ˌascerˈtainable adj ˌascerˈtainably adv ˌascerˈtainment nas•cer•tain (ˌæs ərˈteɪn)
v.t. 1. to find out definitely; learn with certainty or assurance. 2. Archaic. to make certain, clear, or definitely known. [1400–50; < Middle French acertain-,acertener to make certain] as`cer•tain′a•ble, adj. as`cer•tain′ment, n. syn: See learn. ascertain
Past participle: ascertained
Gerund: ascertaining
| Imperative |
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| ascertain | | ascertain |
| Present |
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| I ascertain | | you ascertain | | he/she/it ascertains | | we ascertain | | you ascertain | | they ascertain |
| Preterite |
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| I ascertained | | you ascertained | | he/she/it ascertained | | we ascertained | | you ascertained | | they ascertained |
| Present Continuous |
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| I am ascertaining | | you are ascertaining | | he/she/it is ascertaining | | we are ascertaining | | you are ascertaining | | they are ascertaining |
| Present Perfect |
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| I have ascertained | | you have ascertained | | he/she/it has ascertained | | we have ascertained | | you have ascertained | | they have ascertained |
| Past Continuous |
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| I was ascertaining | | you were ascertaining | | he/she/it was ascertaining | | we were ascertaining | | you were ascertaining | | they were ascertaining |
| Past Perfect |
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| I had ascertained | | you had ascertained | | he/she/it had ascertained | | we had ascertained | | you had ascertained | | they had ascertained |
| Future |
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| I will ascertain | | you will ascertain | | he/she/it will ascertain | | we will ascertain | | you will ascertain | | they will ascertain |
| Future Perfect |
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| I will have ascertained | | you will have ascertained | | he/she/it will have ascertained | | we will have ascertained | | you will have ascertained | | they will have ascertained |
| Future Continuous |
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| I will be ascertaining | | you will be ascertaining | | he/she/it will be ascertaining | | we will be ascertaining | | you will be ascertaining | | they will be ascertaining |
| Present Perfect Continuous |
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| I have been ascertaining | | you have been ascertaining | | he/she/it has been ascertaining | | we have been ascertaining | | you have been ascertaining | | they have been ascertaining |
| Future Perfect Continuous |
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| I will have been ascertaining | | you will have been ascertaining | | he/she/it will have been ascertaining | | we will have been ascertaining | | you will have been ascertaining | | they will have been ascertaining |
| Past Perfect Continuous |
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| I had been ascertaining | | you had been ascertaining | | he/she/it had been ascertaining | | we had been ascertaining | | you had been ascertaining | | they had been ascertaining |
| Conditional |
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| I would ascertain | | you would ascertain | | he/she/it would ascertain | | we would ascertain | | you would ascertain | | they would ascertain |
| Past Conditional |
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| I would have ascertained | | you would have ascertained | | he/she/it would have ascertained | | we would have ascertained | | you would have ascertained | | they would have ascertained |
Thesaurus| Verb | 1. | ascertain - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize"determine, find out, findgauge - determine the capacity, volume, or contents of by measurement and calculation; "gauge the wine barrels"translate - determine the amino-acid sequence of a protein during its synthesis by using information on the messenger RNArectify - math: determine the length of; "rectify a curve"redetermine - fix, find, or establish again; "the physicists redetermined Planck's constant"sequence - determine the order of constituents in; "They sequenced the human genome"ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"refract - determine the refracting power of (a lens)count, numerate, enumerate, number - determine the number or amount of; "Can you count the books on your shelf?"; "Count your change"discover, find - make a discovery, make a new finding; "Roentgen discovered X-rays"; "Physicists believe they found a new elementary particle"admeasure - determine the quantity of someone's sharesituate, locate - determine or indicate the place, site, or limits of, as if by an instrument or by a survey; "Our sense of sight enables us to locate objects in space"; "Locate the boundaries of the property" | | 2. | ascertain - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"insure, see to it, ensure, check, assure, control, seeproofread, proof - read for errors; "I should proofread my manuscripts"check off, tick off, mark off, tick, check, mark - put a check mark on or near or next to; "Please check each name on the list"; "tick off the items"; "mark off the units"control - verify by using a duplicate register for comparison; "control an account"check - verify by consulting a source or authority; "check the spelling of this word"; "check your facts"double-check - check once more to be absolutely surecross-check - check out conflicting sources; crosscheck facts, for examplecinch - make sure ofcard - ask someone for identification to determine whether he or she is old enough to consume liquor; "I was carded when I tried to buy a beer!"spot-check - pick out random samples for examination in order to ensure high qualityverify - confirm the truth of; "Please verify that the doors are closed"; "verify a claim"ascertain, find out, learn, watch, determine, see, check - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"cover - maintain a check on; especially by patrolling; "The second officer covered the top floor"verify, control - check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard; "Are you controlling for the temperature?" | | 3. | ascertain - find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time"find out, learn, watch, determine, see, checkinsure, see to it, ensure, ascertain, check, assure, control, see - be careful or certain to do something; make certain of something; "He verified that the valves were closed"; "See that the curtains are closed"; "control the quality of the product"ascertain, determine, find out, find - establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize"test - determine the presence or properties of (a substance) | | 4. | ascertain - learn or discover with certaintyget a line, get wind, get word, hear, learn, discover, find out, pick up, see - get to know or become aware of, usually accidentally; "I learned that she has two grown-up children"; "I see that you have been promoted"price - ascertain or learn the price of; "Have you priced personal computers lately?" |
ascertainverb find out, learn, discover, determine, confirm, settle, identify, establish, fix, verify, make certain, suss (out) (slang), ferret out Try to ascertain what services the bank is offering.ascertainverbTo obtain knowledge or awareness of something not known before, as through observation or study:determine, discover, find (out), hear, learn.Translationsascertain (ӕsəˈtein) verb to find out. We shall never ascertain the truth. 查明 查明ˌascerˈtainable adjective 可查明的 可查明的IdiomsSeeascertain fromMedicalSeeascertainmentascertain
Synonyms for ascertainverb find outSynonyms- find out
- learn
- discover
- determine
- confirm
- settle
- identify
- establish
- fix
- verify
- make certain
- suss (out)
- ferret out
Synonyms for ascertainverb to obtain knowledge or awareness of something not known before, as through observation or studySynonyms- determine
- discover
- find
- hear
- learn
Synonyms for ascertainverb establish after a calculation, investigation, experiment, survey, or studySynonymsRelated Words- gauge
- translate
- rectify
- redetermine
- sequence
- ascertain
- find out
- learn
- watch
- determine
- see
- check
- refract
- count
- numerate
- enumerate
- number
- discover
- find
- admeasure
- situate
- locate
verb be careful or certain to do somethingSynonyms- insure
- see to it
- ensure
- check
- assure
- control
- see
Related Words- proofread
- proof
- check off
- tick off
- mark off
- tick
- check
- mark
- control
- double-check
- cross-check
- cinch
- card
- spot-check
- verify
- ascertain
- find out
- learn
- watch
- determine
- see
- cover
verb find out, learn, or determine with certainty, usually by making an inquiry or other effortSynonyms- find out
- learn
- watch
- determine
- see
- check
Related Words- insure
- see to it
- ensure
- ascertain
- check
- assure
- control
- see
- determine
- find out
- find
- test
verb learn or discover with certaintyRelated Words- get a line
- get wind
- get word
- hear
- learn
- discover
- find out
- pick up
- see
- price
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