是复合形容词结构,做定语。
如:five-year-old 五岁大的……
—I will be on ____ holiday.
—Certainly. He's my cousin. Why?
—But I don't think two weeks ______ enough.
—You mean you can have ___________ off? Oh, that's great!
—Oh. I'm surprised that a ____________girl can dance so well!