佐々木：夏休み、ケンブリッジに行くの。スーツケースを買わなくては。
木村：ずいぶん気が早いんですね。まだニカ月も先ですよ。
Ki ga hayai
Sasaki: Natsu-yasumi, Kenburijji ni iku no. Suutsukeesu wo kawanaku tewa.
Kimura: Zuibun ki ga hayain desu ne. Mada ni-ka-getsu mo saki desu yo.
Sasaki: I'm going to Cambridge in the summer holidays. I must buy a suitcase.
Kimura: Ifs a bit early to be thinking about that, isn't it? That's two months away.
Ki ga hayai means to be too early for something, to be well ahead of time in doing something.
Now that the cherry blossoms have fallen, Golden Week has come and gone, and we're into the rainy season, I'm starting to think about my summer vacation. This year I'm taking a group of students to Cambridge in England, and then on to Florence and San Gimiagnano in Italy.
The Japanese summer is so humid that you can't survive without an air conditioner, but Cambridge is cool, and the atmosphere of the city, steeped in history as it is, makes it a wonderful place to visit Little by little I'm already starting to pack things into my suitcase. Jibun de mo, hontoo ni kiga hayai to omou (Even I think I'm being a bit premature). We don't leave until July 18, so I still have another six weeks.
Nevertheless, when I go into a bookshop I find myself wanting to look at the guidebooks. This will be the second time I've been to Florence, but this time there's an Italian lesson included in the course - which reminds me that I must buy an Italian language textbook. Doo shite, sonna ni ki ga hayain desu ka (Why are you always rushing to get things done way ahead of time?), people ask me, but watashi nado ki go hayai to wa ie nai (I wouldn't say I'm being over hasty). I have a friend who is already thinking about his winter holidays. Ikura nan de mo, ki ga haya sugi masu yo (Whatever you say, that's just too far ahead of time), I tell him.
The opposite of ki ga hayai is nonbiri shite iru. Amari nonbiri shite iruto, hikooki no yoyaku ga ma ni ai masen yo. (If you go about it in too leisurely a fashion, you won't be able to book a flight).