the number of books is 20.book不是可数名词吗,为什么用is不用are
the number of books is 20.book不是可数名词吗,为什么用is不用are
the number of books is 20,为什么不是are
How long is the holiday?holiday不是可数名词吗?为什么不用复数?
the number of the class is 20 这里的number 是可数名词还是不可数
a series of books后面为什么接is a number of books 后面为什么接are,
what —is—the number of them?为什么横线填is 不是 are?
the number of the workers here is about 50.句中为什么用is而不是are?
为什么用the number of tigers is getting larger and langer不用biger
people不是不可数名词吗?为什么用are而不是is?
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?
可数名词是用is 还是are
The price of the shoes is ¥12中为什么要用is而不用are