A 篇章学习:朗读对话，回答问题
Bob: Good morning! I am Bob.
Alice: Nice to meet you.I'm Alice.She is my sister, Betty.We are British.Are you British, too?
Bob: No, I'm not.I'm from New York.It is a beautiful city.This is Sam, my pet dog.He is a clever dog.
Alice: Wow! He's so cute.
Bob: Thanks.Let's play with Sam.
Alice: Good idea!
B 语法聚焦1: 人称代词主格
人称代词常用来指代人或事物，主格在句子中做主语。
练习1 写出对应的人称代词主格。
C 语法聚焦2: be动词
小贴士
我(I)用am，你(you)用are，is跟着他(he)她(she)它(it)，单数is，复数are.
练习2 先选用适当的be动词填空，再仿照例句改写句子。
例：Amy is five years old.
She's five years old.
1 Tom and Tim _______ friends.
_________________________________________________________
2 Sam and I _______ not happy.
_________________________________________________________
3 The building _______ not on fire.
_________________________________________________________
4 Mike _______ not a teacher.
_________________________________________________________
5 You and Bob _______ good friends.
_________________________________________________________
D 语法聚焦3:含有be动词的三种句型。
结构：
肯定句： 主语 + am / is / are + 其他.
否定句： 主语 + am / is / are + not + 其他.
一般疑问句：Am / is / are + 主语 + 其他?
肯定回答：Yes, 主语 + am / is / are.（不用缩略形式）
否定回答：No, 主语 + am / is / are + not.（常用缩略形式，见语法聚焦2）(www.xing528.com)
小贴士
变一般疑问句时，要注意：一提二改三问号。
一提：把be动词提到主语之前。
二改：主语若为I / we或 my / our (+名词)等第一人称代词时，疑问句中要改为you或your (+名词)等第二人称代词。不管是肯定回答还是否定回答，仍使用第一人称。
三问号：句末加问号。
练习3 按要求写句子。
1 Mike is a football player.（变成否定句）
______________________________________________________________
2 I am a 12-year-old boy.（变成一般疑问句并做肯定回答）
______________________________________________________________
______________________________________________________________
3 They are my parents.（变成一般疑问句并做否定回答）
______________________________________________________________
______________________________________________________________
单元练习
练习4 按要求写句子。
1 ( ) This _______ my mother.
A.are B.is C.am
2 ( ) Eric and Alan _______ my students.
A.aren't B.isn't C.is
3 ( ) Your books _______ not new.
A.be B.are C.is
4 ( ) The girl _______ my sister._______ is beautiful.
A. is ; She B.is ; It C.is ; He
5 ( ) I _______ good at dancing.
A.isn't B.aren't C.am not
练习5 请用be动词的适当形式填空。
1 My father ________ a pilot.
2 ________ those two girls your sisters?
3 How _________ your father?
4 These students _________ from Beijing.
5 What class _________ you in?
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