一个不可数名词做主语时,谓语动词用单数。and连接两个不可数名词做主语时,谓语原则上用复数,但是两个名词若构成一个整体事物时,谓语则用单数。
不可数名词后面谓语形式
一个不可数名词+单数谓语:water is useful.
两个不可数名词表达一种意思+单数谓语:
Bread and butter is delicious.奶油面包很好吃.
两个以上的不可数名词表达多种意思+复数谓语:
The bread and butter are needed.面包和奶油都需要.
and连接两个名词做主语时,谓语原则上用复数,但是两个名词若构成一个整体事物时,谓语则用单数。
The teacher and his son are picking apples now.(老师和他的儿子在摘苹果)
Fish and chips is very famous food.(鱼和薯条是一种出名的食品)