文档介绍：一、be(am、is、are)的基本用法:
我(I)用am,你(you)用are,is用于他(he)她(she)它(it),单数用is复数用are,否定句在be后加not,一般疑问句将be提前。回答:Yes,人称代词+ be./ No, 人称代词+be + not. 如:
1) He is Mr. Chen.  He is not Mr. Chen. 
-- Is he Mr. Chen?   -- Yes, he is. / No, he isn’t.
2) I am a student.   I am not a student. 
-- Are you a student? 
-- Yes, I am. / No, I am not.
3) They are teachers.  They are not teachers.
-- Are they teachers?   
-- Yes, they are. / No, they aren’t.
1. ______ you fine?          
2. I _________ Mr. Chen.
3. _____ he your mother?       
4. -- ______ they from Japan?
-- Yes, they _______.
5. You ________ a teacher and she _____ a doctor.
6. Where _______ Jack from?    
7. I _______ fine, too. Thanks
8. -- Who ____ this? -- This _____ Wang Kang.
.
9. -- ____ you a student?  -- Yes, I _____.
10. -- Where _______ Beijing?
-- It_______ in China.
11. -- ___ Ronaldo a Brazilian? -- Yes, he __ .
12. “I”______ also a letter.         
13. You and I _________ students.
14. He and she________ friends.      
15. He and I________ teachers.
二、可数名词的复数:
(1)规则变化
1)一般在名词词尾加—s 如:car----cars; apple---apples  
2)以s, x, ch, sh结尾的词,在词尾加---es
如:box---boxes; bus---buses; watch ---watches.
3)以辅音字母+y结尾,变y为i再加es,如:family---families. 
4)以fe、f结尾,变fe、f为v再加es,如:life---lives.
二、可数名词的复数:
(2)不规则变化:
如:mouse---mice;tooth---teeth; foot---feet;Chinese---Chinese, Japanese---Japanese;man---men; woman---women; child---children
写出下列名词的复数形式
1. teacher ___   2. class __   3. name __  
4. orange____ 5. number   6. apple___  
7. bus_____     8. erase___
         
  
             
      
三、a, an的用法:
a /an 都表示“一,一个”,单词以元音读音开始的,我们在前用an, 单词以辅音读音开始的,我们在前用a
如:an apple / an interesting book;/ an English boy/ an old man.
A map/ ruler/bus/box
1. ---What’s that?. ---It’s ______ egg.      
  A. a            B. the             C. /             D. an
2 .- ---What's that in English   ---It's ___ car. It's___ orange car. 
A. a, an    