摘要： 不定数量的词组, 如:part of , a lot of , lots of , one of , a number of , plenty of等作主语时, 谓语动词的单复数取决于量词后面名词的数.如: A part of the textbooks have arrived. 一小部分教科书已运到. A part of the apple has been eaten up by the pig. 这个苹果的一部分被猪吃光了.

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