考点一、 考查不定冠词a / an表示个别或泛指的用法。
(1) 用在可数名词前表示“一个”，含义上相当于“one”。
如：The development of industry has been a gradual process throughout human existence, from stone tools to modern technology.
(2) 与单数可数名词连用，表示某一类人或事物；亦可泛指某一类人或事物中的“任何一个”。
如：It is generally accepted that a boy must learn to stand up and fight like a man.
(3) 用在抽象名词或物质名词前，表示“一种，一次，一类”等意义。
如：He had a strong dislike for cold weather.
(4) 用在序数词前，表示“再一，又一”。
如：He missed the gold in the high jump, but will get a second chance in the long jump.
(5) 用在专有名词前，相当于“一位，一个，某位，某个”或“……式的人”。
如：Experts think that the recently discovered painting may be a Picasso.
(6) 用在季节、月份、星期或节日的名词前，表示某个特定的季节、月份、日子或节日。
如：The accident happened on a rainy Sunday towards the end of July.
