百科
不定冠词
不定冠词的定义
(1)表示"一个"，意为one;指某人或某物，意为a certain。
A Mr. Ling is waiting for you.
(2) 代表一类人或物。
A knife is a tool for cutting with.
Mr. Smith is an engineer.
(3) 词组或成语。
a little / a few / a lot of / a type of / a pile / a great many / many a / as a rule / in a hurry / in a minute / in a word / in a short while / after a while / have a cold / have a try / keep an eye on / all of a sudden
(4) 不定冠词在句子中最大的语法功能是：用在可数名词的单数形式前表示泛指--表明一类人或事物区别于它类。
例：I am a Chinese. 我是(一个)中国人。
This is a book. 这是(一本)书。
(5)为了读音的方便，在以元音音素开头的可数名词的单数名词前用an而不用a。当我们使用an时，条件有三：①这个名词的读音必须是以元音音素开头--即它的 音标的第一个音素是元音，而不是说它是以元音字母开头。②它必须是个可数名词。③它还必须是个单数名词。我们常常见到这类用法：
a university 一所大学 an hour 一个小时
an orange 一只桔子 an engineer 一位工程师
an ordinary man一个普通人
an honest person一位诚实的人
元音字母 有：a，e，i，o，u五个
相关试题
If you fail this time, you"ll have to do it _______ second time.
[ ] A. a
B. an
C. any
D.He isn"t so _____ boy as you think. [ ] A. a clever
B. clever a
C. clever
D. a cleverer—What kind of student does your mother want you to be?
—She wants me to be honest boy.[ ] A. a
B. an
C. (不填)
D. the—What did you do yesterday evening?
—I wrote ________ composition.[ ] A. a 800-words
B. an 800-word
C. an 500-word
D. a 400- wordsYou made the same mistake for _____ second time, dropping _____ "n" in the word. [ ] A. a; the
B. the; an
C. a; an
D. a; aLots of visitors come to Shanghai because it is _____ city. [ ] A. so a beautiful
B. very a beautiful
C. such beautiful
D. quite a beautifulThe teacher found her _____ and gave her some different homework to do every day. [ ] A. was clever
B. was a clever girl
C. a clever girl
D. clever girlMany young people want to work in Shanghai because it is _____ city. [ ] A. so a modern
B. very a modern
C. such modern
D. quite a modernMy grandfather has sent me _________ e-dog as my birthday present. [ ] A. a
B. an
C. /Many companies are planning to work four days ______ week nowadays. [ ] A. a
B. an
C. the
D. /Our English teacher asked us to write _________ 80-word passage yesterday afternoon. [ ] A. a
B. an
C. the
D. /In a zoo in Shandong Province, the zoo keepers tried ____way to help ____ monkey give up smoking. [ ] A. the; a
B. one; the
C. a; the
D. every; aShe is _______ serious student now than she used to be. [ ] A. a far more
B. the far more
C. much more
D. far moreWe study five days _____ week and on Sundays we often play _____ football. [ ] A. a; nthe
B. 不填; a
C. an; a
D. a; 不填Forty minutes _____ for the children to finish all the work. [ ] A. is quite a long time
B. are quite long
C. was a quite long time
D. were quite long timeDavid comes from ____ European country and he is ____ honest boy. [ ] A. an; a
B. a; an
C. the; an
D. a; the— Where"s Jack today?
— Oh, I"m sorry to say that he had ______ accident yesterday. And now he is in ______ hospital.[ ] A. a, the
B. the, a
C. /, the
D. an, /There is going to ______ English film this evening. [ ] A. be an
B. have an
C. be a
D. has a— Do you have a red pencil?
— No, I only have ______.[ ] A. a black
B. balck
C. the black
D. a black oneThere is _____ "h" and _____ "u" in the word "house". [ ] A. a; a
B. an; a
C. an; an
D. a; an单项选择。
— By the way, have you got E-mail address?
— Oh, yes, it"s rggren@hotmail.com.[ ] A. the
B. an
C. a
D. /改错。 1. 这是一本英语书。
This is a English book.
2. 这是什么？是书包。
What"s this? It"s bag.
3. 那个用英语怎么说？
What"s that English?
4. 这是苹果，那是梨。
This"s an apple. That"s a pear.
5. 那不是我的自行车。
That not is my bike.
6. 这是你的闹钟吗？不是。
Is this your clock? No, it"s no.
7. 它是一辆日本小汽车。
It"s a japanese car.
8. 那是我的铅笔盒。
That is my a pencil-box.选择填空。 Jane ______ want to be ______ officer. It"s boring. [ ] A．isn"t; an
B．doesn"t; a
C．doesn"t; an选择填空。 ______ the gate, there is ______ eastern hall. [ ] A．Near, a
B．Next to, an
C．On, an单项选择。 This is ______ "s" and that"s______ "u". [ ] A. a, a
B. a, an
C. an, a
D. an, an单项选择。 It"s ______ old photo ______ my family. [ ] A．a, at
B．an, in
C．the, of
D．an, of选择填空。 — What"s his job?
— He is ______ engineer. He works in a factory.[ ] A. the
B. a
C. an
D. / (不填)选择填空。 Mr Wang is ______ old teacher. ______ is very strict. [ ] A. an; She
B. a; She
C. an; He
D. a; He选择填空。 Mary is in ______ red dress and her hair ______ brown. [ ] A. /; is
B. a; are
C. a; isMiss Fang is ______ English teacher. is a good teacher. [ ] A. our, Her
B. my, He
C. a, She
D. an, She按要求改写句子。 1. There are some old nurses in the hospital. (改为单数形式)
There _______ _______ old nurse in the hospital.
2. There is only one reading room in the school. (对划线部分提问)
_______ _______ reading rooms in the school?
3. The flowers are in the park. (对划线部分提问)
_______ _______ the flowers?
4. They are some birds in the tree. (对划线部分提问)
_______ _______ in the tree?
5. I go to school at seven thirty. ( 改为一般疑问句)
_______ _______ go to school at seven thirty?— Hi, Alice! What"s this in English?
— It"s ______ eraser.[ ] A. a
B. an
C. the
D. /There is _______ "u" and _______"s" in the word "us". [ ]
A. the; a
B. a; the
C. an; a
D. a; anMike is _____ American boy. He studied in _____ university in America. [ ] A. the, a
B. a, a
C. an, a
D. an, anLi Ying is 8-year-old girl, but she can play drums pretty well. [ ] A. an, the
B. a, /
C. an, /
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