前几期我们学习了英语语法：代词one, other用于表示时间、this/that, these/those、last, next, every。这一期，我们学习英语语法：不定冠词 类别的表示。
1. 冠词的分类
冠词在名词前，说明名词的含义。
冠词可以分成两类：不定冠词a(n)和定冠词the。
不定冠词，一般放在单数可数名词前。
a用于以辅音音素，包括半元音音素/j/、/w/（注意：不是辅音字母）开头的词。
an用于以元音音素（不是元音字母）开头的词。
比如：
a university一所大学
a horse一匹马
a C一个C
a European country一个欧洲国家
an uncle一位叔叔
an hour一小时
an M一个M
an English book一本英语书
1.1不定冠词 类别的表示
（1）不定冠词用于单数可数名词前，表示一类人或者物，含义相当于一类中的任何一个，也可以用不带冠词的复数名词表示。
比如：
男孩不总是比女孩聪明。
A boy is not always cleverer than a girl.
Boys are not always cleverer than girls
定冠词用于单数可数名词前，也可以表示类别，强调整个类别。
比如：
Edison had thousands of inventions, and the electric light was one of them.
爱迪生有几千项发明，电灯是其中之一。
The computer is important in modern society.
电脑在现代社会中很重要。
（2）不定冠词，经常用于名词前表示身份，特别是用于作表语或者补足语的名词前，而在其相应的复数名词前刚不用冠词。
比如：
“Are you a new comer?”he asked.
“你是新来的?”他问。
Heis not a university teacher, but a high school teacher.
他不是大学教师，而是个中学教师。
John wanted his sons to be engineers.
约翰要他的儿子们都成为工程师。
（3）表示某人的职务或者头衔前，经常不用冠词。
比如：
Bill, monitor of our class, is good to every one of his classmates.
比尔，我们班的班长，对他的每位同学都很好。
欢迎转发啊~~~发动大家来做作业，学英语~
英语作业20180302
一、选择填空
1___honest businessman never does any dishonest tricks in doing ___ business.
A.A,/ B.An,/ C.The,a D./,/
2.He says he has been to America and talked to the President of ___ White House in___ Washington.
A.the,/ B.the, the C./, / D.a, the
上一期英语作业20180301考答案：
17.yourself 18.herself 19.themselves 10.oneself/himself
二、分析句子的英语语法结构，并翻译成中文
A little girl dressed in pink, maybe three years old, is smiling through a rip in a tarpaulin. She is leaning against the bamboo pole holding up her home. Below her is a 15-foot drop, straight down to a dried-up riverbed. The steep valleys across the huge Rohingya refugee camps are a growing concern as Bangladesh’s monsoon season approaches. Last summer, when hundreds of thousands of Rohingya fled across the border from Myanmar in the face of an alleged genocide, the Bangladesh government allocated state-owned land for their camps.【英语外刊The Guardian】
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