Whetherとは

意味・読み方・使い方

発音

• enPR: wĕ'thə(r), IPA^(key): /ˈwɛðə(ɹ)/
• enPR: hwĕ'thə(r), IPA^(key): /ˈʍɛðə(ɹ)/
• 韻: -ɛðə(ɹ)
• ハイフネーション: wheth‧er
• 異形同音異義語: weather, wether (both in accents with the wine-whine merger)

限定詞

whether

1. (obsolete) Which of two.
   • 1590, Philip Sidney, The Countess of Pembroke's Arcadia, Book III

     But to whether side fortune would have been partial could not be determined.

   • 1596, Edmund Spenser, The Faerie Queene, Book IV, Canto III:

     Whilst thus the case in doubtfull ballance hong,

     Vnsure to whether side it would incline,

   • 1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], OCLC 964384981, Ecclesiastes 11:6:

     In the morning sowe thy seede, and in the euening withhold not thine hand: for thou knowest not whether shall prosper, either this or that, or whether they both shall be alike good.

   • 1633, George Herbert, The Temple, The Pearl:

     In vies of favours whether party gains...

代名詞

whether

1. (obsolete) Which of two. [11th-19th c.]
   • 1526, William Tyndale, trans. Bible, Matthew XXVII:

     The debite answered and sayde unto them: whether of the twayne will ye that I lett loosse unto you?

   • 1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], OCLC 964384981, Matthew 21:31:

     Whether of them twain did the will of his father?

   • 1720, Daniel Defoe, Captain Singleton

     I told them we were in a country where we all knew there was a great deal of gold, and that all the world sent ships thither to get it; that we did not indeed know where it was, and so we might get a great deal, or a little, we did not know whether; ...

   • 1726 October 28, [Jonathan Swift], “A Great Storm Described, the Long-Boat Sent to Fetch Water, the Author Goes with It to Discover the Country. […]”, in Travels into Several Remote Nations of the World. […] [Gulliver’s Travels], volume I, London: […] Benj[amin] Motte, […], OCLC 995220039, part II (A Voyage to Brobdingnag):

     On the 17th, we came in full view of a great island, or continent (for we knew not whether;) on the south side whereof was a small neck of land jutting out into the sea, and a creek too shallow to hold a ship of above one hundred tons.

接続詞

whether

1. (obsolete) Introducing a direct interrogative question (often with correlative or) which indicates doubt between alternatives.
   • 1526, William Tyndale, trans. Bible, Mark 2:9 (the King James is almost the same):

     whether ys it easyer to saye to the sicke of the palsey, thy synnes ar forgeven the: or to saye, aryse, take uppe thy beed and walke?

   • 1616, William Shakespeare, King John, I.i:

     Whether hadst thou rather be a Faulconbridge, [...] Or the reputed sonne of Cordelion?

2. Used to introduce an indirect interrogative question that consists of multiple alternative possibilities (usually with correlative or).

   He chose the correct answer, but I don't know whether it was by luck or (whether it was) by skill.

   • 1915, G[eorge] A. Birmingham [pseudonym; James Owen Hannay], chapter I, in Gossamer, New York, N.Y.: George H. Doran Company, OCLC 5661828:

     As a political system democracy seems to me extraordinarily foolish, […]. My servant is, so far as I am concerned, welcome to as many votes as he can get. […] I do not suppose that it matters much in reality whether laws are made by dukes or cornerboys, but I like, as far as possible, to associate with gentlemen in private life.

   • 2012 June 19, Phil McNulty, “England 1-0 Ukraine”, in BBC Sport:

     The incident immediately revived the debate about goal-line technology, with a final decision on whether it is introduced expected to be taken in Zurich on 5 July.

   • 2013 July 20, “Old soldiers?”, in The Economist, volume 408, number 8845:

     Whether modern, industrial man is less or more warlike than his hunter-gatherer ancestors is impossible to determine. The machine gun is so much more lethal than the bow and arrow that comparisons are meaningless. One thing that is true, though, is that murder rates have fallen over the centuries, as policing has spread and the routine carrying of weapons has diminished.

3. Without a correlative, used to introduce a simple indirect question.

   Do you know whether he's coming?

4. Used to introduce a disjunctive adverbial clause which qualifies the main clause of the sentence (with correlative or).

   He's coming, whether you like it or not.

   Whether or not you're successful, you can be sure you did your best.

使用する際の注意点

• In traditional grammar, the clauses headed by whether in senses 2 and 3 are classified as noun clauses, and those headed by whether in sense 4 are classified as adverbial clauses.
• There is some overlap in usage between senses 2 and 3, in that a yes-or-no interrogative content clause can list the two possibilities explicitly in a number of ways:

Do you know whether he’s coming or staying?

Do you know whether he’s coming or not?

Do you know whether or not he’s coming?

Further, in the first two of these examples, the “or staying” and “or not” may be added as an afterthought (sometimes indicated in writing with a comma before), such that the whether may be uttered in sense 3 and then amended to sense 2.

• The or not can be placed after whether or after the verb, although in senses 2 and 3, or not is not required.
• Sense 4 does not have a counterpart that introduces only a single possibility and thus requires or not if no other possibilities are presented. For example,

“He’s coming, whether you like it” is ungrammatical. Grammatical versions are “He’s coming, whether you like it or not” or “He’s coming, whether you like it or dislike it”.

• The main verb in adverbial clauses with whether is sometimes in the subjunctive mood, especially if the verb is be:

I shall be glad to play any instrument, whether it be a violin or a trumpet.