新东方考研语法讲堂163

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5. what，who，which，any，mare，some，half，mast，all，none.等代词可以是单数，也可以是复数，主要靠意思决定。但指不可数名词时作单数看待。
     例如：Which is your book? Which are your books?
     Here' s same mare (coffee). Here' re same more (tomatoes).
     None of the books are/is easy enough for us.
    Most ofMost of
    All ofAll of
    Some ofThe money was stolenSome ofThe member was there.
    Half ofHalf of
    None ofNone of
    Two thirds ofTwo third of
    由Many a或mare than one所修饰的词做主语时，意义上虽然是复数，但谓语动词用单数形式。none在代表不可数的东西时总是看作单数.
     如：Many a person is far his plan. 很多人赞成他的计划。
     Mare than one people is against his plan. 不止一个人反对他的计划。