1. 表示一类中的任何一个。例如:[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te NC�K]i2msTX/I!BFroG]
I've just bought a new mobile phone. 我刚刚买了一部新手机。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te 0cn65h"DaZxm=qFroG]
It is well known that Yang Liwei is a hero. 众所周知,杨利伟是个英雄。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te }Xd!#hSx0=3VPNG`YLFroG]
Please pass me an apple. 请递给我一个苹果。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te =nzE.O3&k~ 1T/FroG]
2. 用于单数可数名词前,表示类别。例如:[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te VTA5]^Q%Y
X#L+FroG]
The computer is one of the most important inventions in the 20th century. 电脑是二十世纪最重要的发明之一。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te zB_c%j|v@Sp.LAs@gFroG]
A TV set has become part of people's daily life. 电视已成为人们日常生活的一部分。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te l/"cVKh
T&^TMFroG]
3. 用于表示“时间或度量衡”的名词前,表示“一或每一”。例如:[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te $PXVnhNUn
,Lr}c,xSFroG]
Students have six classes a day. 学生每天上六节课。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te ^b_q }]4IR'%r!LcFroG]
The Ministry of Railways is planning a speed-up for 2005, with some trains[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te 0W$=U!lX!=@ *ngFroG]
expected to reach 200 kilometers an hour. 铁道部正计划着2005年的火车提速,预计火车每小时达到200公里的速度。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te ^LLkN/~|x{ 3qX9ptFroG]
Please do remember to take the medicine three times a day. 一定要记住一天吃三次药。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te C=0s+vV+$J9HL.?hFroG]
4. 用于表示职业的名词前。例如:[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te d4C24zTnY9+
E #FroG]
My father is a doctor. 我父亲是医生。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te 6%tj7?p63F;6FI|(nwFroG]
Would you like to be a computer expert like Bill Gates? 你想像比尔·盖茨一样成为电脑专家吗?[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te "E]LTPW*sp,3_2kpmFroG]
My sister is an English teacher. 我姐姐是英语教师。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te Q%={X
u- ovM
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