魔法英语语法手册(初中版) 第三章 冠词三、不定冠词a(an)的用法
分类: 英语学习方法
①表示某一类人或事物中的个体要在名词前加a(an)。例如：?
Your mother is a nurse. 你妈妈是一名护士。?
Please pass me a chair. 请递给我一把椅子。?
A child needs love in his early life.?一个孩子在早期生活中需要关爱。?
②用来指某人或某物，但不具体说明是谁或是什么时，名词前加a(an)。例如：?
A visitor called me up just now.?一位游客刚给我打了个电话。?
He borrowed a dictionary yesterday.?他昨天借了一本词典。?
A book can help you understand the world.?书可以帮助你了解世界。?
③用来表示“一”的概念，但数的概念不如one强烈。例如：?
The cage is about a metre high, a metre wide.?这个笼子有一米高，一米宽。?
An old man is waiting for you.?一位老人正在等你。?
Here is a present for you. 送给你一件礼物。?
④表示单位、数量、长度等。例如：?
I write to my pen?friend once a month.?我每月一次给我的笔友写信。?
Take this medicine three times a day.?这药一天吃三次。?
My uncle gave me a thousand pounds last time.?上次我叔叔给了我1000英镑。?
⑤用在专有名词前，表示说话者不知道的人或事物。例如：?
A Mr Black rang you up just now.?一个名叫布莱克的人刚才给你打过电话。?
A Li is looking for you. 一位姓李的人在找你。?
A Miss Chen borrowed money from me.?一位姓陈的女士借过我的钱。?
⑥在月份、星期及morning, afternoon, evening, night等名词前有修饰语时，一律用a(an)。例如：?
on a cold morning在一个很冷的早上?
in a sunny Sunday 在一个晴朗的星期天?
in a hot month 在一个很热的月份?
on a terrible night 在一个可怕的夜晚?
⑦与表示职业、身份等的名词连用时，常常不将“一”翻译出来。例如：?
The boy wants to be an engineer when he grows up.?这个男孩长大后想当工程师。?
Are you a doctor or a nurse? 你是医生还是护士？?
Is your grandfather interested in a foreign language??你爷爷对外语感兴趣吗？?
⑧用在“such a(an)…”、“quite a(an) …”、“many a(an) … ”、“rather a(an) …”与“so＋形容词＋单数名词”的结构中。例如：?
It is such a tall tree. 这棵树很高。?
Many a man comes to work on the farm.?
许多人来这家农场劳动。?
She is rather a painter. 她真是个画家。?
⑨用于what引导的感叹句中。例如：?
What a cold day it was yesterday!?昨天真是一个大冷天！?
What an interesting picture it is!?这是一幅多么有趣的画！?
What a difficult problem! 多难的题啊！?
⑩用于某些固定搭配中。例如：?
a few 一些，少数几个 a bit 一点儿?
a lot(of) 许多，大量 a little 一点儿?a piece of 一片／块……have a cold 得感冒?
have a meal 吃顿饭 have a rest 休息一下?
have a good time 过得愉快；玩得高兴?have a swim 游泳have a walk 散步
Your mother is a nurse. 你妈妈是一名护士。?
Please pass me a chair. 请递给我一把椅子。?
A child needs love in his early life.?一个孩子在早期生活中需要关爱。?
②用来指某人或某物，但不具体说明是谁或是什么时，名词前加a(an)。例如：?
A visitor called me up just now.?一位游客刚给我打了个电话。?
He borrowed a dictionary yesterday.?他昨天借了一本词典。?
A book can help you understand the world.?书可以帮助你了解世界。?
③用来表示“一”的概念，但数的概念不如one强烈。例如：?
The cage is about a metre high, a metre wide.?这个笼子有一米高，一米宽。?
An old man is waiting for you.?一位老人正在等你。?
Here is a present for you. 送给你一件礼物。?
④表示单位、数量、长度等。例如：?
I write to my pen?friend once a month.?我每月一次给我的笔友写信。?
Take this medicine three times a day.?这药一天吃三次。?
My uncle gave me a thousand pounds last time.?上次我叔叔给了我1000英镑。?
⑤用在专有名词前，表示说话者不知道的人或事物。例如：?
A Mr Black rang you up just now.?一个名叫布莱克的人刚才给你打过电话。?
A Li is looking for you. 一位姓李的人在找你。?
A Miss Chen borrowed money from me.?一位姓陈的女士借过我的钱。?
⑥在月份、星期及morning, afternoon, evening, night等名词前有修饰语时，一律用a(an)。例如：?
on a cold morning在一个很冷的早上?
in a sunny Sunday 在一个晴朗的星期天?
in a hot month 在一个很热的月份?
on a terrible night 在一个可怕的夜晚?
⑦与表示职业、身份等的名词连用时，常常不将“一”翻译出来。例如：?
The boy wants to be an engineer when he grows up.?这个男孩长大后想当工程师。?
Are you a doctor or a nurse? 你是医生还是护士？?
Is your grandfather interested in a foreign language??你爷爷对外语感兴趣吗？?
⑧用在“such a(an)…”、“quite a(an) …”、“many a(an) … ”、“rather a(an) …”与“so＋形容词＋单数名词”的结构中。例如：?
It is such a tall tree. 这棵树很高。?
Many a man comes to work on the farm.?
许多人来这家农场劳动。?
She is rather a painter. 她真是个画家。?
⑨用于what引导的感叹句中。例如：?
What a cold day it was yesterday!?昨天真是一个大冷天！?
What an interesting picture it is!?这是一幅多么有趣的画！?
What a difficult problem! 多难的题啊！?
⑩用于某些固定搭配中。例如：?
a few 一些，少数几个 a bit 一点儿?
a lot(of) 许多，大量 a little 一点儿?a piece of 一片／块……have a cold 得感冒?
have a meal 吃顿饭 have a rest 休息一下?
have a good time 过得愉快；玩得高兴?have a swim 游泳have a walk 散步