表示具体事物的可数名词，其单数形式不可在句子中独立出现，要加上限定词：
例：
错误：apple
正确：
an apple
the apple
one apple
my apple
Lucy's apple
each/every/another apple
this/that apple
可数名词如果表示一类事物/一个总称，不强调数量时，可单独在句子中做成分，不需要加限定词：
例：
I love apple
I go to school everyday
不可数名词和复数名字可以独立出现在句子中，它们前面可以加限定词，也可以不加限定词，但是不能加表示单数的限定词，如a/an/one等：
the ice cream
my ice cream
Lucy's apples
some/a lot of apples
these/those apples
限定词分类如下：
冠词：a , an ,the
表示归属关系的词： my , Lucy's
表示数量的词： one , some , a few
指示代词： this , that , these , those
表示数量的词： each , every , another
其中：
a , an 不定冠词，泛指
the 定冠词 ，一般表示特指
定冠词the，一般用于特指：
例：
1.Ice cream is delicious.
2.The ice cream I bought today is delicious.
3.I had an apple and a banana.
I ate the apple and I gave the banana to my sister.
4.This morning I saw a beautiful lady.
The lady smiled at me.
5.Jay Chou,the famous singer.
Jay Chou , a famous singer.
6.You have a beautiful voice.
And you are the voice.
注意：
1.the后面既可+不可数名词，也可+可数名词单数/复数
2.the 在辅音因素前发“zhe”，在元音因素前发“zi”
a/an+可数名词单数，用于泛指：
1.A child needs a lot of love.
2.I don't have a car.
3.I ate a banana this morning.
4.Jess is a teacher.
注意：
1.a/an后面只能加可数名词单数。
- 辅音因素开头的单数名词前用a，元音因素开头的单数名词前用an。如：an hour
作业：
在空格处填入a/an/the
1.Jess is ___ English teacher. (an)
2.Jess is ___ English teacher who taught me English last year. (the)
3.I did ___ grammar course last year. My friend is going to ___ course this year.
(a),(the)
