(用以引導出兩種非此即彼的可能性)是...或不...Whether or not it rains/, we're playing football on Saturday. 無論下不下雨, 我們星期六一定踢足球。Tell me whether or not you're interested. 告訴我你有沒有興趣。
總之, 無論如何, 不管怎樣I told her I am not sure I can get the tickets she wants, but she wrote to tell us she would come, whether or no. 我告訴她不一定能搞到她要的票, 但她寫信說, 不管怎樣她都要來。We must stick to our promise whether or no. 不管怎樣, 我們必須遵守諾言。
是不是...; 是否...; 要不要, 是...或不...She has two more weeks to decide whether to sell the house or not. 她有兩星期可以決定要不要買房子。Whether it rains tomorrow or not, we will go hiking. 無論明天是否下雨, 我們將去健行。
