one,some,each,a区别

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one,some,each,a区别
one,some,each,a区别

one,some,each,a区别
one作基数词或代词,表示数量为“一”,指代上文中出现的单数可数名词,表示的是泛指这类物品中的一个,如果表示特指,则用it,比如:
My computer has a problem.I want to buy a new one.
Let's buy the cheap one.
Did you bring the textbook?No,I didn't bring it.
some表示“一些”,修饰可数名词的复数或不可数名词,如:
some strawberries
some butter
some cream
some milk
some sugar
some flour
each是“每个”,侧重个别,修饰单数可数名词,述说对象至少有两个,如:
Each of my parents got a prize.
a是不定冠词,表示“一个”,数量为“一”,修饰可数名词的单数形式,与one的区别在于,one强调数量,a强调的是事物类属,表示泛指,没有限定,例如:
Rome wasn't built in a day.
The boy drew a circle on the paper.
A foot equals twelve inches.
Sixteen ounces make a pound.
希望我能帮助你解疑释惑.

one 用法和 a 差不多
some 一些
each 每一个