限定词,限定词是对名词词组中名词起特指或泛指、定量或不定量等限制作用的一类词限定词与形容词的区别,尽管限定词和形容词都可以用在名词前面来修饰名词，但二者在性质和用法上都存在着很大的差别 限定词用以限定名词所指的范围，对名词起泛指或特指、定量或不定量等限定修饰作用而形容词则是用来表示名词的性质、特征例如：many/few/his children, naughty/lovely/clever children 除了few, little, many, much外，限定词没有比较级和最高级形式，大多数形容词有比较级和最高级形式限定词种类：冠词the, a, an；物主限定词my, your, his；指示限定词this, these；关系限定词whose, which；疑问限定词what, which, whose；不定限定词no, any, some, each, every, enough, either, neither, all, both, half, several, many, much, (a) few, (a) little, other, another；基数词、序数词、倍数词、分数词； 量词a lot of, lots of, plenty of, a great/good deal of, a large/small amount/quantity of, a great/large/good number of ；名词属格Marys, Johns, his fathers,限定作用,根据不同限定作用可分为以下四类： 1）特指限定词the, my, the old mans, whose, such, the first, this, those, etc. 2）泛指限定词a, an, either, another, what, whatever, etc. 3）定量限定词half, double, twice, one-third, one, each, every, both, etc.,4)不定量限定词 some, any, no, all, enough, ,more, most, plenty of, a lot of, lots of + C the last men 与不可数名词或复数可数名词均可搭配的限定词：a lot of, lots of, plenty of, more, most (6) 与单数名词和不可数名词搭配的限定词：this、that (7)与三类均可搭配的限定词：any, some, no, the, 物主限定词（your, my）,名词属格（Toms, my mothers）,2、限定词之间的位置搭配（三种限定词）根据限定词在名词前的位置关系，我们把限定词区分为三类：前位限定词（Pre-determiner）、中位限定词（Central Determiner）和后位限定词（Post-determiner）。
例如：They questioned both (前位限定词) the (中位限定词) last(后位限定词) two(后位限定词) boys(名词)., 前位限定词,1）种类：前位限定词主要是用来说明名词的数量，主要有三种倍数词 例如：half my salary, twice my salary, double my salary, three times my salary；分数词例如：one third my salary, two-thirds my salary；个体形容词：all and both, all my salary, both my salaries 2）共存性：前位限定词一般互相排斥，不能共存例如我们不能说：all half my salary, half double her income, 中位限定词,1）种类：冠词the, a, an, 例如：all the book, half an hour, twice the size；物主限定词my, your, his, her, our, their, 例如：all my money, all his money；指示限定词this, that, these, those, 例如：all these problems, twice that size, four times this amount；名词属格Johns, his fathers 2）共存性：中位限定词亦彼此排斥，不能同时出现。
例如我们不能说：my the money, our these problems, 后位限定词,1）种类：基数词或序数词：one/first, two/second, three/third, four/fourth等等例如：the two children, his fourth birthday；一般序数词：next, last, past, previous, subsequent, other, another等例如：my next plan, our last meeting, your previous mistakes, her subsequent response；量词：few, many, several, little, less, more等例如：my many friends, our several achievements, the few friends that I have 2）共存性：不同于相互排斥的前位和中位限定词，后位限定词可以同时出现在名词前例如：my next two plans, several other people, 后位限定词,但也有先后顺序问题： 序数词一般序数词+基数词： the first two weeks, during the next 50 years； 序数词一般序数词+量词： during the past few years,不定限定词some, any, 从与名词搭配来看，some和any均可以与不可数名词和可数名词复数连用，表示“一些”。
some一般用在肯定句中；而any一般用在否定句中例如： Clint is busy. He always has some work to do. But John is lazy. He never does any work. Last night I was very hungry and I wanted some food to eat. But now I am not hungry and I dont want any food to eat. I need some medicine to cure my cough. I want to buy some computer books. I dont have any friend here., 在疑问句中，我们多数情况用any，但是在表示我们期待一个正面回答或要鼓励对方说“是”时，要用some在疑问句中例如： Have you got any medicine to cure your cough? Would you like to give me some advice? Can I have some more wine? any可以表示“无论哪一个，任何一个”，此时可用于任何类型的句子。
例如： You can catch any bus. They all go to the railway station.,不定限定词 another, other, 从与名词搭配来看，another只能与单数可数名词连用，表示不确定的“另一个”、“再一个”如another day，而不说another days, another water（可以说another cup of water） 然而，other可与复数可数名词以及不可数名词连用，表示不确定的“另外的”、“其余的”人或物如other boys, other fish 从与数词搭配来看，注意二者词序上的差别： 1）another+数词+复数名词 2）数词+other+复数名词 顺便提及的是，从以上我们可知，虽然another不能直接与复数名词连用，但其后可以先接数词或few然后再接复数名词如：another few weeksa few more weeks，another few boysa few more boys我们还应该注意这两种用法的意思区别 I will stay here for another three days. 意思是“我还要在这里再呆三天”。
another+数词+名词复数”这一结构的基本意思是“在原有基础上的一个延续” I am always busy from Monday to Thursday, but I can come on three other days. 意思是“我其他三天（Friday, Saturday, and Sunday）能来”数词+other+名词复数”这一结构只是单纯地表示“其他的，另外的”each, every的比较,相同点： each和every后面都只能接单数可数名词此时若作主语，句子谓语动词显然要用单数例如： Every/Each boy has a gift. Every man is the master of his own fortune.,不同点： 二者最重要的区别是：each不仅用作限定词，而且可用作代词；而every只能用作限定词如上句可改为：Each has a gift., 在意思上来看，二者有两点区别 1) each用来指两个或两个以上的事物；而every却总是指三个或三个以上的事物，不指两个 There are a lot of trees on each side of the street. 2) 尽管each和every都可作“每一个”讲，但两者意思并不完全一样。
Every强调整体，相当于all的意思；而each则表示个别的概念当我们用each时，我们强调的是一个一个不同的人或事物 We want every student to succeed in the exam. Each student has his own personal dream in his mind., every可与数词连用然后再加复数名词，而each一般不这样用例如： every two days；every other day；every four years/every fourth year In the United States, presidential elections are held once every four years.,either, neither的比较, 从词义角度分析，这两个词的词义不同 1）either是“两个当中的任何一个”，“这个或那个（one or the other）” 例如：Come over on Saturday or Sunday. Either day is OK. either有时候也指“两个中的每一个（each of two）”，特别是与end和side连用时。
例如：There are a lot of trees on either side of the river. 比较：There are a lot of trees on both sides of the river.,还可以说：There are a lot of trees on each side of the river.（each可指两者或两者以上） 但不可以说：There are a lot of trees on。