whether /ˈwɛðɚ/ conjunction Learner's definition of WHETHER
1
a : if it is or was true that是否(属实) b : if it is or was better是否(更好) 2
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used to indicate choices or possibilities是否(表选择或可能性) -
Whether we succeed or fail, we must try.无论成败,我们都必须试一下。
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It doesn't matter whether you pay by cash or check.用现金或支票支付都可以。
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We're going whether or not you decide to come along. = Whether or not you decide to come along, we're going. [=we're going if you decide to come with us and we're going if you decide not to come with us]不管你决定来还是不来,我们都要去。
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I had to decide whether or not to respond to his letter.我必须得决定是否回复他的信。
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The police are investigating whether (or not) the death was a homicide.警方正在调查这起死亡是否为他杀。
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The game will be played whether it rains or not.无论是否下雨,比赛都会举行。