Special 1 has beef and onion .onion为什么不用复数

Special 1 has beef and onion .onion为什么不用复数 亲,一个关于英语的问题：Special 1 has beef and onion中的onion为什么不加s special 1 has beef and onion,onion作不可数名词,那apple怎么用 Special 1 has beef and onion,ahd is just 10 rmb for 15 dumpl RMB在句子中怎么读就是想知道一下,句子是：Special 1 has beef and onion ,and is j 来做几道简单的英语题Special one () beef and onion and () just 10RMB fo The noodles ()beef and onion and () only 6 RMB 第一个空是have,has onion Preferential 1,beef and onion dumplings with 15 just 10 yuan We usually have beef and onion dumplings.同意句 根据要求改写原句.(1).We'd like beef and onion dumplings.(对beef and o onion的复数形式