--Is that Mr. Green?
---No, Mr. Green is an man. But this man is only about .
A. 80-year-old; 18 years old
B. 80-years-old;18 years old
C. 80-year-old;18-year-old
D. 80 years old;18-year-old
网友回答
(答案→)A. 80-year-old; 18 years old
B. 80-years-old;18 years old
C. 80-year-old;18-year-old
D. 80 years old;18-year-old
解析：80-year-old为复合形容词作定语，year不用复数，某人18岁，用18 years old。选A。