1、构成：数词 -单数名词、数词?单数名词-形容词(每两词间用连字符-
2、用法： A：常作定语，用于名词前,一般不单独使用。 Eg: an eight - year-old boy\ a ten-metre-tall tree
B：复合形容词后加复数，表示一类人或物，可独立作主语。 Holiday (C)
选择： 1、 He is_____ and he has an_____ sister. A.ten years old ,8– year-old B. ten-year-old, ten years old
2、 We will have a______ holiday after the exam. A.two month B. two-month C.two - months
3、 I think______ can choose their own life style.
A. nineteen-year-old B. nineteen-year-olds C. nineteen years old D. nineteen-year olds
4、 There is a____ tree in the park. A.four hundrde years B. four-hundred-year-old
C. four-hundred-year old
5、 Nie Haisheng had a______ flight in space. A. five-days B. five-day C.five day’s
6、 I’ d like to spend________ holiday in the country. A.a two-day B. two-day C. two days’
7、 The little boy wrote a______ letter to his uncle. A. five-hundred words B. five-hundred-word
