为什么pizza,sold,salad这三个词既可数也不可数?

为什么pizza,sold,salad这三个词既可数也不可数? I ordered ___________ pizza and salad. 请问为什么前面用不定冠词,salad前面为什么不用冠词? pizza SANDWICH MOONCAKE SWEET DUMPLINGS SALAD HAMBURGER PIZZA ZONGZI HOT DOG DUMPLINGS什么意思? SANDWICH,MOONCAKE,SWEET,DUMPLINGS,SALAD,HAMBURGER,PIZZA,ZONGZI,HOTDOG,答得清楚 mooncake sweet dumplings salad pizza zongzi dumplings 是出自外国还是中国 谁能帮我 用 soup、 fish、 chicken、 salad、 pizza、 here you are.编一段儿歌? 改错：1:Green Ten is only $89.2:The pizza and salad lunch special are $3.50 salad Do you like salad?salad 为什么不加s The fish_well and soon they_outA were sold;were sold B sold;were sold C was sold;soldD sold;sold为什么选 B 鱼不是被卖吗?为什么不用被动 你们是怎么分辨 及物和不及物的 这其中 又有什么方法 难到只能是 死记硬 用小写字母将单词写在横线上 SANDWICH MOONCAKE SWEET DUMPLNGS SALAD HAMBURGER PIZZA ZONGZI HOTDOG DUM用小写字母将单词写在横线上SANDWICH MOONCAKE SWEET DUMPLNGS SALAD HAMBURGER PIZZA ZONGZI HOTDOG DUMPLINGSChinese food:Western SANDWICH MOONCAKE SWEET DUMPLINGS什么意思?SANDWICH MOONCAKE SWEET DUMPLINGS SALAD HAMBURGER PIZZA ZONGZI HOT DOG DUMPLINGS什么意思? 分别初一可数名词和不可数名词soda,tomato,pizza,juice,cheese,olive,onion,milk,tea,salad,green pepper i ordered a pizza and______salad.i ordered a pizza and______salad.为什么后面不填冠词 Some of the fish are sold这句话为什么说are sold,不说is sold?fish在这里难道不是做不可数的么?若是做可数的“种类”,为何不是some of the fishes?书上的,纠结着... We are doing a market study to see if the product------wellA wil sell B well be sold C has been sold D is being sold请问这道题目为什么不能选B?不是属于被动形式吗? SANDWICH MOONCAKE SWEET ……分别是什么国家的食物?SANDWICH MOONCAKE SWEET DUMPLINGS SALAD HAMBURGER PIZZA ZONGZI HOT DOG DUMPLINGS什么意思?分别是什么国家的食物?