there are some fish中fish既然指的是鱼的种类,那为什么不加es

there are some fish中fish既然指的是鱼的种类,那为什么不加es 英语中关于fish是可数还是不可数名词的问题,如下那有一些鱼翻译成英文是There are some fishes还是There is some fish there are some fish in the rivers改为一般疑问句 There ( )some fish in the riverand they are swimming happily There are some fish in the river. (改为一般疑问句)' Are there some fish in the water?否定回答 there（is or are）some fish,指代fish时用it还是them There is some fish in the river.There are much fish in the river.上面两句哪句是正确的呀? There ( are)some rice,some fish in the bowls.be 动词正确吗? There ( are)some rice,some fish in the bowls.be 动词正确吗?为什么? There ____ some _____ in the river.A is fish B are fish C are fishes 选哪个呢?为什么? _______ some nice fish on the plate请问横线处是填there is 还是there are 为什么? There are some fish in the cupboard.还是：There is some fish in the cupboard.还有一个：Do you want some(还是any) bread.?? there are some fish in the river 还是there is some fish in the river是are还是is 为什么 好像都用说的. 英语单词单复数练习There （ ）some water in the bottle and there are some fish in the water. 初二英语首字母填空~There are still some fish a_____ in the fish tank.Let's go to feed them. There are many fish in the river .这个句子中fish 为什么不用复数形式? there are many _____________(fish )