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| CONJUNCTION |
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| /ˈweðə/ |
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| 1 | used when someone does not know which of two possibilities is true 是否；是…还是… |
| They asked us whether we were married. 他们问我们是否结婚了。 |
| There is some doubt as to whether the illness is infectious. 这种病是否会传染还存有疑问。 |
| whether...or She doesn’ t even know whether her daughter is dead or alive. 她甚至连她女儿是死是活都不知道。 |
| whether or not I still don’ t know whether or not he’ s planning to come. 我仍然不知道他是否打算来。 |
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| 2 | used when someone can choose between two possibilities 是否（用于表示在两种可能中作出选择） |
| Employees are deciding whether to accept the offer. 雇员们正在决定是否接受这项提议。 |
| whether or not There was a debate over whether or not to send troops. 关于是否派遣部队正在争论中。 |
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| 3 | used for saying that it does not matter which of two possibilities is true , because the situation will be the same 不管；无论 |
| The journey, whether by road or rail, takes under four hours. 不论坐汽车还是火车，行程都不超过4小时。 |
| whether...or not Whether you like it or not, you’ ll have to change your lifestyle. 不管你喜不喜欢，你必须改变你的生活方式。 |
| whether...or (whether) Whether we win or whether we lose, we shall respect the democratic process. 不管我们是赢是输，我们都要尊重民主的程序。 |
| LEFENTRY: whether | | | | Both whether and if can be used to introduce indirect questions of the type that expect a ‘yes/no’ answerwhether 和if都可用于引导用yes/no回答的间接疑问句: She asked if/whether I liked jazz. 她问我是否喜欢爵士乐。Use whether , but not if , before an infinitive在不定式前只用whether，不用if: She can’ t decide whether to marry him. 她无法决定是否与他结婚。Use whether , but not if , after a preposition在介词后面只用whether，不用if: There are doubts about whether the system is safe. 系统是否安全还存有疑问。Use whether , but not if , immediately before ‘or not’ 后面紧接or not时只用whether ，不用if: The question is whether or not the government has the right to interfere. 问题是政府是否有权干预。 Whether is generally preferred when ‘or’ appears later in the sentence, but you can also use if 当or 出现在句子后面时，whether 更常用，但也可以用if: It is not clear whether/if the information was stolen or deliberately leaked to the press. 这条信息是被人窃取还是有人故意透露给新闻界的，目前还不清楚。 | | | |
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