whetherとは何ですか?Used in indirect questions to introduce one alternative: We should find out whether the museum is open. See Usage Notes at doubt, if.Used to introduce alternative possibilities: Whether she wins or whether she loses, this is her last tournament. Either: He passed the test, whether by skill or luck. Archaic Which: "We came in full View of a great Island or Continent, (for we knew not whether)” ( Jonathan Swift). whether or no Regardless of circumstances.