Complete the following statements with proper words or expressio

Complete the following statements with proper words or expressions according to the course book.Though having little lexical meaning, ( ) words have strong grammatical meaning.
【正确答案】：FUNCTIONAL
【题目解析】：本题考查功能词的意义。词义包括词汇意义和语法意义。功能词尽管词汇意义很弱，但拥有很强的语法意义。语法意义有词的词性，词的单复数等。functional words：功能词。