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复合形容词的使用
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。
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 hundred 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 count ry. 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