is there any meat in the tomato and egg soup 为什么tomato和egg不用复数

题目

is there any meat in the tomato and egg soup 为什么tomato和egg不用复数
Are there any cabbge in the beef noodles 为什么用are?hed like some onion and mutton noodles 为什么onion不用复数?

答案

tomato和egg在句子中是作soup的定语,起定语的作用,所以不能用复数.
同样地,telephone number
room mate
都是不加复数的.
供参考.