Apple is a ( ) word.A.five-letter B.five-letters C.fives-letters D.five letters

问题描述:

Apple is a ( ) word.A.five-letter B.five-letters C.fives-letters D.five letters
哪错了?为什么不能选D?能解释清楚点么?

five letters是名词短语,可以做主语和宾语,如:This word has five letters.(作宾语) There are five letters in this word.(作主语) ;而不能作定语.five-letter是一个复合形容词,可以做定语.