名词及代词必须在逻辑上及句意上有意义，我们再来看一个例子：
◆ Although the term “supercomputer” may sound fanciful or exaggerated, IT is simply an extremely fast mainframe that can execute trillions of calculations every second.
我们先找到所指代的名词the term “supercomputer”，现在我们更换代词：
◆ ... the term “supercomputer” is simply an extremely fast mainframe...
这句话在的句意改变是很微妙的，The term 并不是a mainframe，但却指a mainframe，所以这句话可以改为：
◆ Right: Although the term “supercomputer” may sound fanciful or exaggerated, IT simply REFERS TO an extremely fast mainframe that can execute trillions of calculations every second.
