two three- year -old girl 的谓语动词用is还是are?

复合形容词可不可以加名词复数?类似：three two-year-old boys 能不能举几个例子 two three- year -old girl 的谓语动词用is还是are? two - year - old two - years -old two year old two years old 哪两个对》 three-year-old 和 three years old 有什么区别 three years old 与 three-year-old 的区别 three -year-old 和 three years old有什么区别? three-year-old 与 three years old区别 two years old与two-year-old的用法区别 three-year-old triplet 的意思 是two three-year boys还是two three-year boy,谓语是什么数? three thousand two-year and four-year schools.three thousand two-year and four-year schools的意思 a three－year－old boy,可以说成a three years old many　thanks! At last the three-year-old boy was____(救） three-year-old这类词算哪个语法点同上 中间连线的 形容词是怎么回事 如three-year--old 一个三岁大的孩子：a three-year old baby a three-year-old baby 到底应该是哪个呢? two( )twins. A. nine-years-old B. nine-year-old C. nine years old D. nine year old 英语连字符用法100 meters race转换后是100-meter-race 还是 100-metre race?是 three-metre-deep 还是 three-metre deep?是 two-year-old-boy 还是 two-year-old boy?一般连字符要用多少个?或者是用在什么词之后?