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一体

一体 (ittai)

意味

emphasis; what on earth; what in the world

(what) the heck; (why) in the world; (who) on earth​before an interrogative, forms an emphatic question

one object; one body; unity​

使い方

いったい + question

This can be used when asking about something surprising, confusing, or unbelievable.

Both the kanji and hiragana form are commonly used.

例文

例文
一体どこで彼に会ったんだ。 Where on earth did you meet him?
あなたは一体何をしていますか? What exactly are you doing?
あの人は一体何の者だ? Who in the world is that?
彼女は一体どこに住んでいるだろう。 Where in the world does she live?
一体誰が彼女にそんなことを言ったのか? Who could have said such a thing to her?
この騒ぎは一体なんですか? What is this fuss all about?
君が欲しいのは一体何だ。 What exactly is it that you want?
一体彼の話は本当だろうか。 Could his story possibly be true?
一体どこで彼に会ったんだ? Where on earth did you meet him?
この会議は一体いつまで続くんだろう。 When on earth will this meeting end?
一体君はここで何をしているの? Where in the world are you and what are you doing?
彼女は一体何が欲しいだろう。 What in the world does she want?
一体どうしてそんなことが起きたのだろう。 How on earth did something like that happen?