7A Unit1第四课时Grammar
教学目标：1．理解并掌握be动词在一般现在时中的用法;
2．掌握一般现在时中含有be动词的肯定句、否定句、一般疑问句的构成与基本用法.
教学重难点: be动词的一般现在时
【教学过程】
Step1. Lead-in
1.T: I am a teacher, you are students (facts)
We are in Class 5 (states)
When we talk about facts and states , we use the simple present tense.
2.T: Look, What is he? Present the verb: am /is / are
Step2. Presentation
1.Look and learn
am / is / are : be动词也叫系动词，表示“是”, 能与不同的主语(subjects)连用.
2. Look and say
3. 与普通名词连用：1）单数名词+is 2) 复数名词+are
e.g. The teacher tall and slim. The students very happy.
4. am/is/are与不同主语连用口诀
I 用______, you用_______, _______用于he, she, it, 单数n 用______, 复数n 都用______.
Step 3. Practice
1.用“be v”的正确形式填空。

1).I a tall girl. 2). You Lily, right?
3).She my twin sister. 4).We good friends. 5).Millie and Sandy good students. 6).The girls from America.
7).My mother at home.
2.play a game
Step 3. Sentences
1. change into negative sentences.（否定句）变否定，be后not。

e.g. This is a box. → This a box
I’m a student. → I a student
They are my classmates. → They my classmates.
2. change into questions sentences. （疑问句）变疑问，be提前。

e.g. He is a teacher → a teacher? Yes , / No,
They are classmates→classmates?
Yes , / No,
★在一般疑问句的肯定回答中不能用缩写形式
【课前热身】
一、完成表格
He is = We are = I am = is not =
It is = You are = She is = are not =
【当堂巩固】
一、用be动词的正确形式填空。

1. My name _______ Tom. I _______ in Class7.
2. ---What ______ it? ---It _____ a bird.
3. He _____ my brother. His name ____ David.
4. --What _____ these? --They _____ pens.
5. This book new. That one old.
6. These watches expensive. Those ones cheap.
7. “I”the ninth letter in the alphabet.
8. His TV set very small. Mine very big.
9. The policemen young. The police-women old.
二、句型转换
1. His cousin is good at swimming.(改为否定句)
2. My mother is at work.(改为一般疑问句并作否定回答)
3. He is in Class 1, Grade 8.(对划线部分提问)
4. mother’s, is, my, long, hair (连词成句)
5. Sandy is my classmate. (改为否定句)
6. My bag is yellow and blue. (对划线部分提问)
________ ________ is ________ bag?
【课后练兵】课时训练
【教/学后反思】_____________________________________________________。