1、(2) 表示人或事物的某一种类, 强调整体, 即以其中的一个代表一类。A horse is useful to mankind. 马对人类有用。(3) 不定冠词用在事物的单位前,如时间, 速度, 价格等意义的名词之前,表示 每一。We often go to school two times a day. 我们常常一天两次去学校。I went to the library once a week at least. (4) 不定冠词用来指某人某物,但不具体说明任何人或任何物。A boy came to see you a moment ago. 刚才有一个小孩来找你。(5)在序数词前表示又一;
2、再一时。如:I want to read the story a second time 我想再读一遍这篇小说 。(6) 表示不特定的某一个A Mr. Smith is calling on the phone. 有一位史密斯先生来电话找你 。(7)在特定的短语里表示特定的含义,与不可数名词连用,如:have a good time 过得高兴 (8) 一日三餐前有修饰语时。-Mum, what shall we have for lunch? -Jiaozi. -Oh, what a wonderful lunch! I enjoy it very much.(9) 在形容词最高级前表示非常L
3、esson Nine is a most difficult lesson, but it isnt the most difficult One.(10)不定冠词用于某些词组中。a little / a few / a lot / 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
4、 sudden2.定冠词的用法定冠词the与指示代词this,that,these,those同源,有那(这)个 这(那)些的意思,但较弱,可以和一个名词连用,来表示某个或某些特定的人或东西。以下为必须加定冠词的情形:(1)在表示双方都明白的人或物的名词之前: Take the medicine.把药吃了。(2)在上文提到过的人或事的名称之前: He bought a house.Ive been to the house.他买了幢房子。我去过那幢房子。(3)在指世上独一无二的事物的名词之前: the sun, the sky, the moon, the earth (4)与单数名词连用表示
5、一类事物,如: The fox is cunning .狐狸是狡猾的。(5)与形容词或分词连用,表示一类人:the rich 富人; the living 生者。(6)用在序数词和形容词最高级,及形容词only, very, same等前面:Where do you live?I live on the second floor. 你住在哪?我住在二层。Thats the very thing that Ineed 那正是我需要的东西。(7)在表示.世纪.年代的结构之前He began to learn Russian in the 1950s. 他在20实际50年代开始学俄语 。但注意:in
6、 ones 50s意为在某人五十多岁时 He looked quite healthy though he was in his 80s.(8)在比较级的两种句型中:表示越 .,就越. The lighter, the better. 越轻越好 。 表示两者中比较.时,用定冠词。There are two books on the table. I like the thicker one.(9)用在动词+sb.+介词+the+身体部位名称的结构中(注意:介词常用in/on/by)。The ball hit me on the back. 球打中了他的头 。(10) 在表示计量单位的可数名词前
7、(注意:介词用by)。The workers are paid by the hour/day/month. 按月付给工人工资 .(11)用在某些由普通名词构成的专有名词前:the Great Wall(长城),the Peoples Park(人民公园)等。the Peoples Republic of China 中华人民共和国 the United States 美国(12)用在表示名词的乐器She plays the piano.她会弹钢琴.The little girl likes to play the violin. 小女孩喜欢拉小提琴。(13)定冠词用在文艺活动,运动场所的名称
8、前。They are going to the cinema tonight. 他们今晚要去影院看电影。 (14)用在姓氏的复数名词之前,表示一家人: the Greens 格林一家人 (或格林夫妇)(15)在方位名词之前,如:in the west on the west (16)在某些短语中in the day, in the morning (afternoon,evening),the day after tomorrow,the day before yesterday,the next morning,in the sky (water,field,country)in the d
9、ark,in the rain,in the distance,in the middle (of),in the end, on the whole,by the way,go to the theatre3、零冠词(不用定冠词)(1) 在物质名词前,如: Water is very important . 水是非常重要的 。(2) 在抽象名词前,如: Failure is the mother of success.失败乃成功之母。(3) 复数名词表示人或物的种类时,如: Doctors cure patients. 医生治病救人 .Those people are teachers, n
10、ot students. 这些人是老师,不是学生 .(4) 在有关游戏的名词前,如: Do you like to play chess? 你喜欢下棋吗 ?(5) 在by + 交通工具的短语里,如: Shall we walk or go by bus? 我们乘车还是步行 ?(6) 在国名,人名和地名前通常不用定冠词,如 : England,Mary;(7)在年份、季节、月份、节日、假日、日期、星期等表示时间的名词之前,不加冠词;We go to school from Monday to Friday. 我们从星期一到星期五都上课。(8)在称呼或表示官衔,职位的名词前不加冠词; The gu
11、ards took the American to General Lee. 士兵们把这个美国人送到李将军那里。(9)在三餐、球类运动的名称前,不加冠词 。如: have breakfast,play chess (10) 在某些固定词组中,是否有冠词,意义不同。in hospital住院,in the hospital在医院里 in bed在卧床,in the bed在床上in front of在.(外)前面,in the front of 在.(内)前部go to hospital去医院看病 go to the hospital 去医院 (并不是去看病,而是有其他目的)Passage 4.
12、An honest boyTony is seven years old. He is an honest and polite boy. One day, it was Sunday. Tony, his sister and his mother stayed at home. He was watching TV and his sister was reading books. His mother was washing clothes. Just then, his father came back with a bag of pears. Tony likes pears ver
13、y much and he wanted to eat one. His mother gave him four and said, “Lets share them.” “Whichpear do you want, Tony?” asked his mother. “The biggest one, mum.” “What?” said his mother, “You should be polite and want the smallest one.” “Should I tell a lie just to be polite, mum?”I. 在下列句子的空格中填上a, an或
14、者the, 不需要的地方用“/”表示:1. This is _ old map. It is _ useful map. 2. We have no classes in _ afternoon on _ Saturday. 3. _ spaceship flies at about eleven kilometers _second. 4. Beijing is _ capital of _ China. It is _ beautiful city. 5. Roman was not built in _ day. 6. Chinese is quite _ difficult language for Mike. 7. Many _ students will take _ active part in sports meet. 8. There is _ interesting picture on _ wall
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