Question

how much is the pair of shoes? 10 dollars ___enou

how much is the pair of shoes?
10 dollars ___enough.
为什么填is（或are ）?

Answer 1

度量衡作主语，谓语动词用单数。 例如： 表示时间、距离、金额、重量、面积、体积、容积等度量的名词短语做主语时，谓语用单数。 Two weeks was too long Five times five makes twenty five

追答

如果满意的话，希望采纳哦～～

追问

那什么时候可以谓语用复数呢?

追答

正常的可数名词复数谓语都用复数的，度量衡是特殊的

1． 由and, both …and, 连接的并列主语，和both ,a few, many ,several 等修饰语后面谓语动词通常用复数形式。 Few people know he and I were classmates when we were at college.
2．集体名词police, public, militia, cattle ,class ,youth后常用复数形式的动词 The Chinese people are brave and hardworking The cattle are grazing in t he sunshine
3．当表示民族的词与冠词合用当主语，谓语动词用复数形式 The Japanese were once very aggressive 4．某些形容词前面加定冠词表示一类人，做主语时候，谓语动词用复数 The rich are not always selfish
5．不可数名词作主语，其前有表示数量的复数名词修饰时，谓语动词用复数 Three million tons of coal were exported that year

Answer 2

填is
因为主语10 dollars 是 一笔 钱 所以系动词be用单数形式is

Answer 3

10 dollars 看做一个整体，好比一张10元钞票，用 is

Answer 4

Answer 5

时间和金钱是特殊情况