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。 1、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 ...
但如果两个单数名词指同一个人、同一事物、单一概念时,谓语动词要用单数,如:a knife and fork ;a cart and horse;the bread and butter;the needle and thread;a cup and saucer;my house and home;cause and effect;supply and demand;pen and ink early to bed and ...
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