would you like to have ( ) water or ( )soft drink?

题目

would you like to have ( ) water or ( )soft drink?
这题的答案是would you like to have (/) water or ( a )soft drink?
为什么water 前面不需加冠词,而soft drink前面要加a .

答案

因为water是不可数名词,前面不能加冠词；而drink在这里表示饮料的种类,与soft 构成soft drink表示汽水,是可数名词,所以前面要加冠词.