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冠词a和an的用法...ppt

发布:2019-03-21约1.61千字共8页下载文档
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Free powerpoint template: 专项练习-冠词a\an\the 冠词a和an a/an在英语中被称为不定冠词。它们表示一(个,只,本,件,块,片……),在意义上没有区别。 用a/an时,我们必须记住两条基本原则: the 的用法 1,一般用于特指:The girl is my sister. 那个女孩是我的妹妹。 2,第二次出现(上文提过的人或事):There is a book on the desk. The book is mine.(桌子上有一本书,那本书是我的。) 3,世界上独一无二的: The moon(月亮) the earth(地球 ) the sun(太阳) the Great Wall(长城) 4,词组: on the desk in the classroom water the plants clean the room 等等 5、用于序数词和形容词的最高级前: January is the first month of the year. February is the second month of the year. Jenny is the oldest girl in the class. I am the youngest in my family. 练习: 1, Tom wants to be scientist(科学家) 。He wants to go to moon. 2 Jenny has uncle and cousin. 3,I have eraser. Eraser is in my bag. 4, boy is Tom’s brother. 5, The bird was here hour ago. * ①a/an有不确定的意义。(即所说 的人、动物或东西对听者或读者来说 可能是不知道的)如:I am a girl. A dog has four legs. ②a/an只能用于单数可数名词之前。 在英语中,液状、气状物体、肉类、粉类等很多都属于不可数名词,前面不能够带有不定冠词(a \an )。 例如cola 可乐,milk 牛奶,water 水和 gas 汽油,等等。 例如:a book (一本书), an eraser(一块橡皮) 此外还需注意a和an的发音: n]用于元音(以元音字母a,e,i, o,u开头的词大多都是)之前。 an[ a(在平时讲话中发[ ]音),用于辅音(不是辅 音字母)之前; 专项训练I:用a, an 填空。 1. --What’s this in English? --It’s _______ bus. 2. –What’s that in English? --It’s ______ pen. 3. –Is this _______ apple? --No, it’s ______ egg. 4. It is _____ cake. 5. –Is that ______ pencil? --No, it’s ______ eraser. 6. That’s _____ English car. 7. It is ______ phone. 8. –What’s that in English? --It’s _____ car. 9. I am _____ teacher. 10. This is _____ old desk. a the an a an The The an * * *
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