none:介词,一个人也没有,没有任何东西,可以指人,也可以指物,常与of连用, none of +可数名词+谓语(单复数皆可). none of +不可数名词+谓语(仅限单数). 辨析: 1.none可用来回答how many,how much 带的问句。如: --How much coal is there in this place? --None. --How many students are there in the classroom? --None.
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