a number of后加复数吗?
a number of后加可数名词复数还是单数
a large number of后加复数么?
a number of和the number of都是加可数名词复数么?
a great many of 后一定加名词复数吗
a lot of 后只能加复数吗
a number of 后面要加可数名词复数,为什么经常加people.people不是不可数名词吗?
A number of后能不能加不可数名词
a number of前加be动词加啥子?the number of后加be动词加啥子?
the number of 和 a number of 它们有什么区别,它们后面加n复数还是n单数?
a number of是只能形容可数名词复数吗?
a number of + 名词 + 谓语复数形式
a number of视为单数还是复数