whether

連接詞, whether(是否) + 子句, Ask him whether he can come or not. 問問他是否能來, whether... or ... 不管是...(或是), We'll go on with the work, whether we can find the necessary tools or not. 不管我們能否找到所需的工具, 我們要把這件工作做下去。, Then again, I doubt whether he will come. 再說,我懷疑他是否會來。