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问题: 单词MASS 主谓一致

单词MASS有两个词组A MASS OF,MASSES OF,它们之后接可数名词还是不可数名词?它们做主语时谓语动词用单数还是复数?

解答:

a mass of 以及masses of 后面可以接可数名词复数或者不可数名词,做主语时谓语动词的数与该名词的数一致。例如:
a mass of information masses of money
a mass of books masses of things
A mass (Masses)of books were given to the children yesterday. (books were)
A mass (Masses)of money has been raised since last week.(money has)