● 名词的单复数与谓语的关系
● 名词修饰名词
◇例题：1. As a result of destroying the forests, a large _____ of desert _____ covered the land.   （2001年）
A. number, has       B. quantity, has   C. number, have   D. quantity, have
2. The young dancers looked so charming in their beautiful clothes that we took _____ pictures of them. （2003年）
A. large amount of B. masses of     C. the number of   D. many of