7Aunit1grammar_81945.ppt

Simple Present tense of “be”一般现在时中be 动词的用法 Unit 1 Grammar (语法) 学习目标： 理解并掌握be动词在一般现在时中的用法 掌握一般现在时的肯定句、否定句、疑问句的构成与基本用法 Be 动词 1. am, is, are 与人称代词连用 2.与普通名词连用 （1）单数名词 + is （2）复数名词 + are Work in pairs: What have you learnt in today’s class? * be动词也叫系动词，表示“是”，具体体现形式有 am, is,are, was,were, will be等 一般现在时 is are am be 动词一般现在时 能与不同的主语(subjects)连用 人称代词 第一人称单数 I 第一人称复数 we 第二人称单数 you 第二人称复数 you 第三人称单数 he she it 第三人称复数 they am I I am “我是” 我是一个女生。 I am a girl. I am tall. 我是高的。 =I’m =I’m a girl. =I’m tall. is he she it He is a boy. She is a girl. It is a dog. 他是一个男生。 她是一个女生。 它是一只小狗。 He is=He’s She is=She’s It is=It’s He’s She’s It’s are you they You are a boy. You are boys. we We are friends. 你是一个男生。 你们是男生。 They are classmates. 他们是同班同学。 我们是朋友。 You’re We’re They’re You are= You’re We are= We’re They are= They’re 用“be”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.You ____ all good students. 6.They ____ Sandy’s parents. am are is are are are The students ______very happy. are The girl ________tall and slim. is be动词的否定句 主语 + be + not am is are not = am not isn’t aren’t 将下列句子改为否定句 This is a box. I’m a student. They are my classmates. This a box. is not/ isn’t I ________a student. They my classmates. are not/ aren’t am not 1. These are my books. __________________ 2. She is Sandy’s sister. __________________ 3. We are in the classroom. ____________________ 4. They are from the UK. ___________________ 5. You are in Class6, Grade7. ____________________ These are not/ aren’t my books. She is not/ isn’t Sandy’s sister. We are not/ aren’t in the classroom. They are not/ aren’t from the UK. You are not/aren’t in Class6, Grade7. 将下列句子改为否定句 be动词的疑问句 He is a teacher. be动词提句首 Is he a teacher? They are classmates. be动词提句首 Are they classmates? 肯定：Yes, he is. 否定