The little girl wrote a _____letter to heraunt.Afive-hundrend-word Bfive-undred-words为什么选A不选B,word是可数名词啊!
问题描述：
The little girl wrote a _____letter to heraunt.
Afive-hundrend-word Bfive-undred-words
为什么选A不选B,word是可数名词啊!
答
five-hundrend-word作定语，相当于一个形容词，你见过adj加后缀s的吗？
答
five-hundred-word是用作形容词的
答
此处将几个当词用连字符连接,构成只可做定语的一个形容词,如15岁的男孩表达为fifteen-year-old boy,year为可数但必须使用单数,这是英语的特殊结构,只要是这种形容词就必须不出现复数.但此种形容词不可作表语,如He is fifteen-year-old.这是错的,只能说He is fifteen years old.
答
加上连字符就不用复数了，不加的时候用。如，a nine-year-old boy ， a nine years old boy