One third of the population in this area are workers. 3.就近原则; 由or;either...or;neither...nor;not only…but also等词连接的名词或者代词作主语,谓语动词的单复数取决于与动词最近的名词的单复数。 Neither you nor your friend is to blame. 4.就远原则; 由...
[解析] trousers作主语时,谓语动词用复数,但当它被this pair of修饰时谓语动词由pair的单复数确定。因此第②句正确。 特别提醒 this kind of,a piece of,a bag of,a box of等,这类短语作主语时谓语动词的单复数由这些短语中的名词决定,而与它们所修饰的名词无关。
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