Be动词的几种形式与用法课件.pptx

Be动词的几种形式与用法肯定式否定式I am a student.I am not a student.He /She/It is. He /She/It is not.We/You/They are.We/You/They are not .be动词包括am，is，are.一肯定式与否定式(以人称代词为例)肯定句：主语+ be +其它 否定句：主语+ be + not +其它I am a student. I am not a doctor.She is Lucy. She is not Lily.They are at home, They are not at school.疑问式简略回答Am I. ?Yes, I am.No, I am not.Is he/ she/ it.?Yes, he/ she/ it is.No, he/ she/ it isntAre we/ you/ they.?Yes, we/ you/ they are.No, we/ you/ they aren t疑问式与简略回答一般疑问句：Be +主语+其它？ 回答：Yes, 主语+be. / No, 主语+be+not.Are you a teacher? Yes, I am. / No, I am not.Are you students? Yes, we are . / No, we arent.Is he a worker? Yes, he is. / No, he isnt. 肯定式否定式I amImIm not.you are youreyoure not. / you arent. he ishesshe isshes it is itshes not. / he isnt .shes not. / she isnt. its not. / it isnt. we are werethey are theyrewere not. / we arent .theyre not. / they we arent .缩略形式eg: Im a boy. Im not a nurse.Youre ten years old. Youre not our classmates.Shes my sister. She not my brother.Be动词的用法口诀：I用am，you用are，is连着他，她，它；单数名词用is，复数名词全用are,变疑问，往前提，句末问号莫丢弃; 变否定，更容易，be后not莫忘记,疑问否定任你变，句首大写莫迟疑。

课堂习题用am, is, are 填空1. -Who _ I? -I _ a boy. -_ you a boy? -No, I _ not.2. The girl_ Jacks sister3. The dog _ tall and fat.4. The man with big eyes _ a teacher.5. _ your brother in the classroom?6. -Where _ your mother? - She _ at home.7. How _ your father?8. Mike and Liu Tao _ at school.9. Whose dress _ this?10. Whose socks _ they?12. Who _ I ?写出下列词适当形式: 1.I am (缩略形式) _ _ 2.is (复数)_ _ 3.we are (缩略形式) _ _ 4.are not(缩略形式) _ _ 5.is not (缩略形式) _ _ 6. its(完整形式) _ 7.shes(完整形式) _ _ 8. theyre(完整形式) _ 按要求完成句子1.His brother is a teacher.否定句: 一般疑问句: 回答： 2.Those are his parents.否定句: 一般疑问句: 回答： 3.Im 14 years old.否定句: 一般疑问句: 回答： 按要求完成句子4.The ruler is on the desk. 否定句: 一般疑问句: 回答： 5.My shoes are 20 yuan .否定句: 一般疑问句: 回答： 6.My name is Andy.否定句: 一般疑问句: 回答： 。