仁爱新版七上 单元语法同步讲义 Unit 1 Let's Be Friends 第02讲: Be动词的一般现在时 语法考点 概念：“be”动词表示“……是……”的意思，一般现在时包括am，is，are三种。 【考点01】一般现在时中“be”动词的三种形式am,is,are 的变化规律 第一人称I am ①I am a girl.我是女孩。 第三人称单数代(he,she,it)、 可数名词单数或不可数名词 is ①He is my brother.他是我的兄弟。 ②She is a doctor.她是一名医生。 ③It is a lovely dog.它是一条可爱的狗。 ④My friend is in Class3.我的朋友在三班。 ⑤The water is clean.这水是干净的。 we,you(你/你们),they或名词复数 are ①We are students.我们是学生。 ②You are a student.你是一名学生。 ③You are sisters.你们是姐妹。 ④They are at school.他们在学校。 ⑤Her brothers are tall.她的兄弟们都很高。 【考点03】be动词的一般现在时的句式结构 句式 构成形式 例句 肯定句 主语+be+其他. ①I am Jane. ②She is lovely. ③We are from Beijing. 否定句 主语+be+not+其他. ①I am Jane. →I am not Jane. ②She is lovely.→ She is not lovely. ③We are from Beijing.→We are not from Beijing. 一般疑问句及其简略回答 Be+主语+其他？ 肯定回答： Yes,主语+be. 否定回答： No,主语+be+not. ①I am Jane.→Are you Jane 肯定回答：Yes,I am. 否定回答：No,I am not. ②She is lovely.→Is she lovely 肯定回答：Yes,she is. 否定回答：No,she is not. ③We are from Beijing.→Are you from Beijing 肯定回答：Yes,we are. 否定回答：No,we are not. 特殊疑 问句 疑问词+be+其他？ ①I am Jane.→Who are you ②She is lovely .→What is she like ③We are from Beijing.→Where are you from 提示： ①当肯定句主语为第一人称I 或 we 时，一般疑问句和特殊疑问句主语要变为第二人称 you,be动词也要变成are, 肯定句中的my和our也要变成your。 ②is、are和not可以缩写为isn't, aren’t，但am和not不能缩写 一、be动词用法口诀 I用am，you用are,is跟着他、她、它。单数不可数用is, 复数名词全用are。 变否定，很容易，be加not，so easy。 变疑问，往前提，大写问号别忘记。 （二）同步练习 一、在下面的横线中填上恰当的Be动词。 1.I am Cathy. 2. You are a writer. 3.She is a nurse. 4. He is fat and strong. 5. It is red and white. 6.We are workers. 7. They are friendly. 8. My son is tall and thin. 9. The girl is Amy's sister. 10.The book is on the chair. 11.Where are you 12.Where is your sister 13. Jane and Tom are my friends. 14. Many elephants are in the zoo. 二、一般现在时中be动词的用法。 1.I am a boy. 否定句： I am not a boy. 一般疑问句： Are you a boy 肯定回答： Yes, I am. 否定回答： No, I am not. 2.She is a nurse. 否定句： She is not a nurse. 一般疑问句： Is she a nurse 肯定回答： Yes, she is. 否定回答： No, She isn't. 三、单项选择。 1．—_____ your friend from America — No, he’s from Korea. A．Is B．Are C．Am D．Be 2．My name _____ Zhao Juan and I _____ a student. A．is; am B．am; is C．are; is D．are; am 3．I _____ Tom. He _____ Tony. A．am, are B．is, are C．am, is D．is, is 4．—_____ these her hats —No, they _____. A．Is；isn’t B．Am；are C．Are；isn’t D．Are；aren’t 5．This set of keys _____ on the table. A．is B．are C．be D．am 6．I _____ in Class 3 and my sisters _____ in Class 2. A．am; is B．am; are C．are; am D．is; are 7．_____ ... ...
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