今日语法:
a quantity of+名词后的谓语单复数情况
a quantity of 后既可以接复数名词,亦可接不可数名词。
a quantity of 加不可数名词,谓语用单数形式;
a quantity of 加复数名词, 谓语用复数形式。
注: quantities of 后加复数名词、不可数名词,谓语都用复数形式。
例:There is a small quantity of water left in the bottle.
A large quantity of books are on sale now.
Great quantities of fish were caught that day.