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TOEFL IELTS BNC: 5989 COCA: 9571

ascertain

verb
/ˌæsəˈteɪn/
/ˌæsərˈteɪn/
(formal)
Verb Forms
present simple I / you / we / they ascertain
/ˌæsəˈteɪn/
/ˌæsərˈteɪn/
he / she / it ascertains
/ˌæsəˈteɪnz/
/ˌæsərˈteɪnz/
past simple ascertained
/ˌæsəˈteɪnd/
/ˌæsərˈteɪnd/
past participle ascertained
/ˌæsəˈteɪnd/
/ˌæsərˈteɪnd/
-ing form ascertaining
/ˌæsəˈteɪnɪŋ/
/ˌæsərˈteɪnɪŋ/
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  1. to find out the true or correct information about something查明；弄清
    • ascertain something It can be difficult to ascertain the facts.可能难以查明事实真相。
    • ascertain that… I ascertained that the driver was not badly hurt.我已查清，驾驶员伤势不重。
    • it is ascertained that… It should be ascertained that the plans comply with the law.须要弄清楚，这些计划要合法。
    • ascertain what, whether, etc… The police are trying to ascertain what really happened.警方正设法查清到底发生了什么事。
    • Could you ascertain whether she will be coming to the meeting?请你弄清楚她来不来开会好吗？
    • it is ascertained what, whether, etc… It must be ascertained if the land is still owned by the government.必须确定这块土地是否仍属于政府所有。
    Oxford Collocations DictionaryAscertain is used with these nouns as the object:
    • authenticity
    • fact
    See full entry
    Word Originlate Middle English (in the sense ‘assure, convince’): from Old French acertener, based on Latin certus ‘settled, sure’.
TOEFL IELTS BNC: 5989 COCA: 9571
TOEFL IELTS BNC: 5989 COCA: 9571
ascertain verb
⇨ find 3
TOEFL IELTS BNC: 5989 COCA: 9571

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