We can have different understandings with the sentence I like Ma

We can have different understandings with the sentence I like Mary better than Jean because of （ ）.
A、referent
B、polysemy
C、grammatical structure
D、homonymy
【正确答案】：C
【题目解析】：本题考查消除歧义.The ambiguity arises from grammatical structure. 歧义产生于语法结构。I like Mary better than Janet.这个句子其实是一个省略句，根据语法结构，它可以理解为：1) I like Mary better than I like Janet “我喜欢玛丽多过我喜欢珍妮特” 或是2) I like Mary better than Janet likes Mary.“我喜欢玛丽的程度比珍妮特喜欢玛丽的程度更深”。所以这句话的歧义是由语法结构引起的。故选C。A选项referent——所指；B选项polysemy——多义关系；D选项homonymy——同形同音异义关系。ABD三项均不符合题意。