冠词：戴在名词头上的帽子，没有特殊情况不能摘掉，包括：a/an/the和零冠词，
- a/an 一个,a nice car ,a big house ,a good name.
- the 这，那，那些，这些 the student , the students
- the 定冠词，确定，知道 a/an 不定冠词，不确定，不知道 There is a monk/The monk is Jake
- a/an an 以元音(a,e,i,i,o,u)发音开头的单词，其余用a an egg, an orange, an hour,
- 国家，专有名词（简写，国籍，人名，城市，不需要冠词）I'm from China,I like Beijing ,She is Japanese,I am chinese.
- 再单数名词前可以用定冠词和不定冠词，复数形式的名词和不可数名词前可用定冠词和零冠词。
- 冠词一般位于名词前，名词如果有形容词修饰，冠词通常位于形容词之前 In the train ,we found an empty third-class carriage /
- 形容词之前有so,as,too,how,修饰时，不定冠词a需要置于形容词之后，名词之前 It was so warm a day that we decided to go to the sea.
- such,what,总是位于不定冠词a之前，such a beautiful color, what a pity多可惜！
- many, many可置于不定冠词之前，后接单数名词，I‘ve been there many a time 我到过那多次。I have heard many a young girl say that.
- 不定代词all,both和副词double,须置于定冠词the 之前 All the birds were asleep. Both the boys were late for dinner. Both 后面的不定冠词可以省略，all后是否接定冠词由冠词一般规则决定，看句子意思。
- half ,twice 均置于a和the 之前 You've only heard half the story. He paid twice the price for it.
- quite,rather可置于不定冠词a之前，亦可置于之后，置于之前表语气较强
- 人称代词
