river可数吗?

river可数吗? river,matter,community可数不可数 请问在英语中,江河湖海是可数名词吗?即river lake sea ocean 是可数名词吗? piano river table可数嘛 哪个可数哪个不可数? River River river “River river ( ) ( )( )( ) ( )( ) River river secret可数吗?secret秘密可数吗? News 可数吗News可数吗 tear可数吗?newspaper可数吗? feather 可数吗feather是不是可数名词~ pastry是否可数?pastry可数名词吗? Fish可不可数? There is 还是are a lot of fish in the river? weather可数吗