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6. 一些学科名词是以 –ics 结尾,如:mathematics, politics, physics 以及news, works等,都属于形式上是复数的名词,实际意义 为单数名词,它们作主语时,其谓语动词要用单数形式。如:The paper works was built in 1990. / I think physics isn‘t easy to study. 7. trousers, glasses, clothes, shoes, 等词作主语时,谓语 用复数,但如果这些名词前有a (the) pair of等量词修饰时,谓语动 词用单数。如:My glasses are broken. / The pair of shoes under the bed is his. 8. “
定冠词the + 形容词或分词”,表示某一类人时,动词用复数。